To make tests of hypotheses about more than two population means, we use the:

normal distribution

chi-square distribution

analysis of variance distribution

*
t
distribution
*

*
*

*
A continuous random variable
x
has a right-skewed distribution with a
mean of 80 and a standard deviation of 12. The sampling
distribution of the sample mean for a sample of 50 elements taken
from this population is:
*

*
not normal
*

*
skewed to the left
*

*
skewed to the right
*

*
approximately normal
*

*
*

*
The model
y = A + Bx
is a:
*

*
probabilistic model
*

*
stochastic model
*

*
nonlinear model
*

*
deterministic model
*

*
*

*
For a goodness-of-fit
test, the frequencies obtained from the performance of an
experiment are the:
*

*
expected frequencies
*

*
observed frequencies
*

*
objective frequencies
*

*
subjective frequencies
*

*
*

*
An error that occurs
because of chance is called:
*

*
probability error
*

*
mean error
*

*
nonsampling
error
*

*
sampling error
*

*
*

*
What is the critical
value of
z for the hypothesis test?
*

*
-2.05
*

*
-2.17
*

*
-2.33
*

*
-1.96
*

*
*

*
The regression
model
y = A + Bx + e is:
*

*
a deterministic model
*

*
a probabilistic
model
*

*
an exact relationship
*

*
a nonlinear model
*

*
*

*
A researcher wants to
test if elementary school children spend less than 30 minutes per
day on homework. The alternative hypothesis for this example will
be that the population mean is:
*

*
less than
or equal to 30 minutes
*

*
less than 30
minutes
*

*
equal to 30 minutes
*

*
not equal to 30
minutes
*

*
*

*
What is the critical
value of
t for the hypothesis test?
*

*
2.738
*

*
2.449
*

*
2.733
*

*
2.441
*

*
*

*
You randomly select
two households and observe whether or not they own a telephone
answering machine. Which of the following is a simple event?
*

*
At most one of them
owns a telephone answering machine.
*

*
Exactly one of them
owns a telephone answering machine.
*

*
At least one of them
owns a telephone answering machine.
*

*
Neither of the two
owns a telephone answering machine.
*

*
*

*
For small degrees of
freedom, the chi-square distribution is:
*

*
rectangular
*

*
skewed to the left
*

*
skewed to the right
*

*
symmetric
*

*
*

*
In a hypothesis test,
a Type I error occurs when:
*

*
a true null hypothesis
is not rejected
*

*
a false null
hypothesis is not rejected
*

*
a false null
hypothesis is rejected
*

*
a true null hypothesis
is rejected
*

*
*

*
A quantitative
variable is the only type of variable that can:
*

*
be used to prepare
tables
*

*
assume numeric values
for which arithmetic operations make sense
*

*
have no intermediate
values
*

*
be graphed
*

*
*

*
The mean of a discrete
random variable is its:
*

*
box-and-whisker
measure
*

*
upper hinge
*

*
expected value
*

*
second quartile
*

*
*

*
For a one-tailed test, the
p
-value is:
*

*
twice the area under
the curve between the mean and the observed value of the sample
statistic
*

*
the area under the
curve between the mean and the observed value of the sample
statistic
*

*
the area under the
curve to the same side of the value of the sample statistic as is
specified in the alternative hypothesis
*

*
twice the area under
the curve to the same side of the value of the sample statistic as
is specified in the alternative hypothesis
*

*
*

*
In a one-way ANOVA, we
analyze only one:
*

*
mean
*

*
population
*

*
sample
*

*
variable
*

*
*

*
The alternative
hypothesis is a claim about a:
*

*
parameter, where the
claim is assumed to be true if the null hypothesis is declared
false
*

*
statistic, where the
claim is assumed to be true if the null hypothesis is declared
false
*

*
statistic, where the
claim is assumed to be false until it is declared true
*

*
parameter, where the
claim is assumed to be true until it is declared false
*

* *

A researcher wants to test if the mean annual salary of all lawyers in a city is different than $110,000. The null hypothesis for this example will be that the population mean is:

greater than to $110,000

not equal to $110,000

less than to $110,000

equal to $110,000

A qualitative variable is the only type of variable that:

cannot be graphed

can assume an uncountable set of values

can assume numerical values

cannot be measured numerically

You toss a coin nine times and observe 3 heads and 6 tails. This event is a:

multiple outcome

multinomial sample point

simple event

compound event

Which of the following pairs of events are mutually exclusive?

Female and male

No and yes

Female and yes

Female and no

The
*
p
-value is the:
*

*
smallest significance
level at which the null hypothesis can be rejected
*

*
smallest significance
level at which the null hypothesis can be rejected
*

*
largest significance
level at which the null hypothesis can be rejected
*

*
largest significance
level at which the alternative hypothesis can be rejected
*

*
*

*
Which of the following
assumptions is not required to use ANOVA?
*

*
The populations from
which the samples are drawn have the same variance.
*

*
The populations from
which the samples are drawn are (approximately) normally
distributed.
*

*
The samples drawn from
different populations are random and independent.
*

*
All samples are of the
same size.
*

*
*

*
Two paired or matched
samples would imply that:
*

*
two data values are
collected from the same source (elements) for two dependent samples
*

*
two data values are
collected from the same source (elements) for two independent
samples
*

*
data are collected on
two variables from the elements of two independent samples
*

*
data are collected on
one variable from the elements of two independent samples
*

*
*

*
We can use the
analysis of variance procedure to test hypotheses about:
*

*
the proportion of one
population
*

*
the mean of one
population
*

*
two or more population
proportions
*

*
two or more population
means
*

*
*

*
The graph of a
cumulative frequency distribution is a(n):
*

*
frequency histogram
*

*
line graph
*

*
stem-and-leaf display
*

*
ogive
*

*
*

*
In a hypothesis test,
a Type II error occurs when:
*

*
a false null
hypothesis is rejected
*

*
a false null
hypothesis is not rejected
*

*
a true null hypothesis
is not rejected
*

*
a true null hypothesis
is rejected
*

*
*

*
The mean of a discrete
random variable is the mean of its:
*

*
percentage
distribution
*

*
frequency distribution
*

*
probability distribution
*

*
second and third
quartiles
*

*
*

*
If you divide the
number of elements in a sample with a specific characteristic by
the total number of elements in the sample, the dividend is the:
*

*
sample
distribution
*

*
sample proportion
*

*
sampling
distribution
*

*
sample mean
*

*
*

*
A linear regression:
*

*
gives a relationship
between two variables that can be described by a line
*

*
gives a relationship
between two variables that cannot be described by a line
*

*
gives a relationship
between three variables that can be described by a line
*

*
contains only two
variables
*

*
*

*
We can use the
analysis of variance procedure to test hypotheses about:
*

*
the proportion of one
population
*

*
two or more population
means
*

*
the mean of one
population
*

*
two or more population
proportions
*

*
*

*
For small degrees of freedom, the
chi-square distribution is:
*

*
Rectangular
*

*
skewed to the left
*

*
symmetric
*

*
skewed to the right
*

*
*

*
The alternative
hypothesis is a claim about a:
*

*
statistic, where the
claim is assumed to be false until it is declared true
*

*
statistic, where the
claim is assumed to be true if the null hypothesis is declared
false
*

*
population parameter,
where the claim is assumed to be true until it is declared false
*

*
population parameter,
where the claim is assumed to be true if the null hypothesis is
declared false
*

*
*

*
In a hypothesis test, a Type II
error occurs when:
*

*
a false null hypothesis is rejected
*

*
a true null hypothesis is rejected
*

*
a true null hypothesis is not
rejected
*

*
a false null hypothesis is not
rejected
*

*
*

*
In a one-way ANOVA, we analyze
only one:
*

*
population
*

*
mean
*

*
variable
*

*
sample
*

*
*

To make tests of hypotheses about more than two population means, we use the:

normal distribution

chi-square distribution

analysis of variance distribution

*
t
distribution
*

*
*

*
A continuous random variable
x
has a right-skewed distribution with a
mean of 80 and a standard deviation of 12. The sampling
distribution of the sample mean for a sample of 50 elements taken
from this population is:
*

*
not normal
*

*
skewed to the left
*

*
skewed to the right
*

*
approximately normal
*

*
*

*
The model
y = A + Bx
is a:
*

*
probabilistic model
*

*
stochastic model
*

*
nonlinear model
*

*
deterministic model
*

*
*

*
For a goodness-of-fit
test, the frequencies obtained from the performance of an
experiment are the:
*

*
expected frequencies
*

*
observed frequencies
*

*
objective frequencies
*

*
subjective frequencies
*

*
*

*
An error that occurs
because of chance is called:
*

*
probability error
*

*
mean error
*

*
nonsampling
error
*

*
sampling error
*

*
*

*
What is the critical
value of
z for the hypothesis test?
*

*
-2.05
*

*
-2.17
*

*
-2.33
*

*
-1.96
*

*
*

*
The regression
model
y = A + Bx + e is:
*

*
a deterministic model
*

*
a probabilistic
model
*

*
an exact relationship
*

*
a nonlinear model
*

*
*

*
A researcher wants to
test if elementary school children spend less than 30 minutes per
day on homework. The alternative hypothesis for this example will
be that the population mean is:
*

*
less than
or equal to 30 minutes
*

*
less than 30
minutes
*

*
equal to 30 minutes
*

*
not equal to 30
minutes
*

*
*

*
What is the critical
value of
t for the hypothesis test?
*

*
2.738
*

*
2.449
*

*
2.733
*

*
2.441
*

*
*

*
You randomly select
two households and observe whether or not they own a telephone
answering machine. Which of the following is a simple event?
*

*
At most one of them
owns a telephone answering machine.
*

*
Exactly one of them
owns a telephone answering machine.
*

*
At least one of them
owns a telephone answering machine.
*

*
Neither of the two
owns a telephone answering machine.
*

*
*

*
For small degrees of
freedom, the chi-square distribution is:
*

*
rectangular
*

*
skewed to the left
*

*
skewed to the right
*

*
symmetric
*

*
*

*
In a hypothesis test,
a Type I error occurs when:
*

*
a true null hypothesis
is not rejected
*

*
a false null
hypothesis is not rejected
*

*
a false null
hypothesis is rejected
*

*
a true null hypothesis
is rejected
*

*
*

*
A quantitative
variable is the only type of variable that can:
*

*
be used to prepare
tables
*

*
assume numeric values
for which arithmetic operations make sense
*

*
have no intermediate
values
*

*
be graphed
*

*
*

*
The mean of a discrete
random variable is its:
*

*
box-and-whisker
measure
*

*
upper hinge
*

*
expected value
*

*
second quartile
*

*
*

*
For a one-tailed test, the
p
-value is:
*

*
twice the area under
the curve between the mean and the observed value of the sample
statistic
*

*
the area under the
curve between the mean and the observed value of the sample
statistic
*

*
the area under the
curve to the same side of the value of the sample statistic as is
specified in the alternative hypothesis
*

*
twice the area under
the curve to the same side of the value of the sample statistic as
is specified in the alternative hypothesis
*

*
*

*
In a one-way ANOVA, we
analyze only one:
*

*
mean
*

*
population
*

*
sample
*

*
variable
*

*
*

*
The alternative
hypothesis is a claim about a:
*

*
parameter, where the
claim is assumed to be true if the null hypothesis is declared
false
*

*
statistic, where the
claim is assumed to be true if the null hypothesis is declared
false
*

*
statistic, where the
claim is assumed to be false until it is declared true
*

*
parameter, where the
claim is assumed to be true until it is declared false
*

* *

A researcher wants to test if the mean annual salary of all lawyers in a city is different than $110,000. The null hypothesis for this example will be that the population mean is:

greater than to $110,000

not equal to $110,000

less than to $110,000

equal to $110,000

A qualitative variable is the only type of variable that:

cannot be graphed

can assume an uncountable set of values

can assume numerical values

cannot be measured numerically

You toss a coin nine times and observe 3 heads and 6 tails. This event is a:

multiple outcome

multinomial sample point

simple event

compound event

Which of the following pairs of events are mutually exclusive?

Female and male

No and yes

Female and yes

Female and no

The
*
p
-value is the:
*

*
smallest significance
level at which the null hypothesis can be rejected
*

*
smallest significance
level at which the null hypothesis can be rejected
*

*
largest significance
level at which the null hypothesis can be rejected
*

*
largest significance
level at which the alternative hypothesis can be rejected
*

*
*

*
Which of the following
assumptions is not required to use ANOVA?
*

*
The populations from
which the samples are drawn have the same variance.
*

*
The populations from
which the samples are drawn are (approximately) normally
distributed.
*

*
The samples drawn from
different populations are random and independent.
*

*
All samples are of the
same size.
*

*
*

*
Two paired or matched
samples would imply that:
*

*
two data values are
collected from the same source (elements) for two dependent samples
*

*
two data values are
collected from the same source (elements) for two independent
samples
*

*
data are collected on
two variables from the elements of two independent samples
*

*
data are collected on
one variable from the elements of two independent samples
*

*
*

*
We can use the
analysis of variance procedure to test hypotheses about:
*

*
the proportion of one
population
*

*
the mean of one
population
*

*
two or more population
proportions
*

*
two or more population
means
*

*
*

*
The graph of a
cumulative frequency distribution is a(n):
*

*
frequency histogram
*

*
line graph
*

*
stem-and-leaf display
*

*
ogive
*

*
*

*
In a hypothesis test,
a Type II error occurs when:
*

*
a false null
hypothesis is rejected
*

*
a false null
hypothesis is not rejected
*

*
a true null hypothesis
is not rejected
*

*
a true null hypothesis
is rejected
*

*
*

*
The mean of a discrete
random variable is the mean of its:
*

*
percentage
distribution
*

*
frequency distribution
*

*
probability distribution
*

*
second and third
quartiles
*

*
*

*
If you divide the
number of elements in a sample with a specific characteristic by
the total number of elements in the sample, the dividend is the:
*

*
sample
distribution
*

*
sample proportion
*

*
sampling
distribution
*

*
sample mean
*

*
*

*
A linear regression:
*

*
gives a relationship
between two variables that can be described by a line
*

*
gives a relationship
between two variables that cannot be described by a line
*

*
gives a relationship
between three variables that can be described by a line
*

*
contains only two
variables
*

*
*

*
We can use the
analysis of variance procedure to test hypotheses about:
*

*
the proportion of one
population
*

*
two or more population
means
*

*
the mean of one
population
*

*
two or more population
proportions
*

*
*

*
For small degrees of freedom, the
chi-square distribution is:
*

*
Rectangular
*

*
skewed to the left
*

*
symmetric
*

*
skewed to the right
*

*
*

*
The alternative
hypothesis is a claim about a:
*

*
statistic, where the
claim is assumed to be false until it is declared true
*

*
statistic, where the
claim is assumed to be true if the null hypothesis is declared
false
*

*
population parameter,
where the claim is assumed to be true until it is declared false
*

*
population parameter,
where the claim is assumed to be true if the null hypothesis is
declared false
*

*
*

*
In a hypothesis test, a Type II
error occurs when:
*

*
a false null hypothesis is rejected
*

*
a true null hypothesis is rejected
*

*
a true null hypothesis is not
rejected
*

*
a false null hypothesis is not
rejected
*

*
*

*
In a one-way ANOVA, we analyze
only one:
*

*
population
*

*
mean
*

*
variable
*

*
sample
*

*
*

To make tests of hypotheses about more than two population means, we use the:

normal distribution

chi-square distribution

analysis of variance distribution

*
t
distribution
*

*
*

*
A continuous random variable
x
has a right-skewed distribution with a
mean of 80 and a standard deviation of 12. The sampling
distribution of the sample mean for a sample of 50 elements taken
from this population is:
*

*
not normal
*

*
skewed to the left
*

*
skewed to the right
*

*
approximately normal
*

*
*

*
The model
y = A + Bx
is a:
*

*
probabilistic model
*

*
stochastic model
*

*
nonlinear model
*

*
deterministic model
*

*
*

*
For a goodness-of-fit
test, the frequencies obtained from the performance of an
experiment are the:
*

*
expected frequencies
*

*
observed frequencies
*

*
objective frequencies
*

*
subjective frequencies
*

*
*

*
An error that occurs
because of chance is called:
*

*
probability error
*

*
mean error
*

*
nonsampling
error
*

*
sampling error
*

*
*

*
What is the critical
value of
z for the hypothesis test?
*

*
-2.05
*

*
-2.17
*

*
-2.33
*

*
-1.96
*

*
*

*
The regression
model
y = A + Bx + e is:
*

*
a deterministic model
*

*
a probabilistic
model
*

*
an exact relationship
*

*
a nonlinear model
*

*
*

*
A researcher wants to
test if elementary school children spend less than 30 minutes per
day on homework. The alternative hypothesis for this example will
be that the population mean is:
*

*
less than
or equal to 30 minutes
*

*
less than 30
minutes
*

*
equal to 30 minutes
*

*
not equal to 30
minutes
*

*
*

*
What is the critical
value of
t for the hypothesis test?
*

*
2.738
*

*
2.449
*

*
2.733
*

*
2.441
*

*
*

*
You randomly select
two households and observe whether or not they own a telephone
answering machine. Which of the following is a simple event?
*

*
At most one of them
owns a telephone answering machine.
*

*
Exactly one of them
owns a telephone answering machine.
*

*
At least one of them
owns a telephone answering machine.
*

*
Neither of the two
owns a telephone answering machine.
*

*
*

*
For small degrees of
freedom, the chi-square distribution is:
*

*
rectangular
*

*
skewed to the left
*

*
skewed to the right
*

*
symmetric
*

*
*

*
In a hypothesis test,
a Type I error occurs when:
*

*
a true null hypothesis
is not rejected
*

*
a false null
hypothesis is not rejected
*

*
a false null
hypothesis is rejected
*

*
a true null hypothesis
is rejected
*

*
*

*
A quantitative
variable is the only type of variable that can:
*

*
be used to prepare
tables
*

*
assume numeric values
for which arithmetic operations make sense
*

*
have no intermediate
values
*

*
be graphed
*

*
*

*
The mean of a discrete
random variable is its:
*

*
box-and-whisker
measure
*

*
upper hinge
*

*
expected value
*

*
second quartile
*

*
*

*
For a one-tailed test, the
p
-value is:
*

*
twice the area under
the curve between the mean and the observed value of the sample
statistic
*

*
the area under the
curve between the mean and the observed value of the sample
statistic
*

*
the area under the
curve to the same side of the value of the sample statistic as is
specified in the alternative hypothesis
*

*
twice the area under
the curve to the same side of the value of the sample statistic as
is specified in the alternative hypothesis
*

*
*

*
In a one-way ANOVA, we
analyze only one:
*

*
mean
*

*
population
*

*
sample
*

*
variable
*

*
*

*
The alternative
hypothesis is a claim about a:
*

*
parameter, where the
claim is assumed to be true if the null hypothesis is declared
false
*

*
statistic, where the
claim is assumed to be true if the null hypothesis is declared
false
*

*
statistic, where the
claim is assumed to be false until it is declared true
*

*
parameter, where the
claim is assumed to be true until it is declared false
*

* *

A researcher wants to test if the mean annual salary of all lawyers in a city is different than $110,000. The null hypothesis for this example will be that the population mean is:

greater than to $110,000

not equal to $110,000

less than to $110,000

equal to $110,000

A qualitative variable is the only type of variable that:

cannot be graphed

can assume an uncountable set of values

can assume numerical values

cannot be measured numerically

You toss a coin nine times and observe 3 heads and 6 tails. This event is a:

multiple outcome

multinomial sample point

simple event

compound event

Which of the following pairs of events are mutually exclusive?

Female and male

No and yes

Female and yes

Female and no

The
*
p
-value is the:
*

*
smallest significance
level at which the null hypothesis can be rejected
*

*
smallest significance
level at which the null hypothesis can be rejected
*

*
largest significance
level at which the null hypothesis can be rejected
*

*
largest significance
level at which the alternative hypothesis can be rejected
*

*
*

*
Which of the following
assumptions is not required to use ANOVA?
*

*
The populations from
which the samples are drawn have the same variance.
*

*
The populations from
which the samples are drawn are (approximately) normally
distributed.
*

*
The samples drawn from
different populations are random and independent.
*

*
All samples are of the
same size.
*

*
*

*
Two paired or matched
samples would imply that:
*

*
two data values are
collected from the same source (elements) for two dependent samples
*

*
two data values are
collected from the same source (elements) for two independent
samples
*

*
data are collected on
two variables from the elements of two independent samples
*

*
data are collected on
one variable from the elements of two independent samples
*

*
*

*
We can use the
analysis of variance procedure to test hypotheses about:
*

*
the proportion of one
population
*

*
the mean of one
population
*

*
two or more population
proportions
*

*
two or more population
means
*

*
*

*
The graph of a
cumulative frequency distribution is a(n):
*

*
frequency histogram
*

*
line graph
*

*
stem-and-leaf display
*

*
ogive
*

*
*

*
In a hypothesis test,
a Type II error occurs when:
*

*
a false null
hypothesis is rejected
*

*
a false null
hypothesis is not rejected
*

*
a true null hypothesis
is not rejected
*

*
a true null hypothesis
is rejected
*

*
*

*
The mean of a discrete
random variable is the mean of its:
*

*
percentage
distribution
*

*
frequency distribution
*

*
probability distribution
*

*
second and third
quartiles
*

*
*

*
If you divide the
number of elements in a sample with a specific characteristic by
the total number of elements in the sample, the dividend is the:
*

*
sample
distribution
*

*
sample proportion
*

*
sampling
distribution
*

*
sample mean
*

*
*

*
A linear regression:
*

*
gives a relationship
between two variables that can be described by a line
*

*
gives a relationship
between two variables that cannot be described by a line
*

*
gives a relationship
between three variables that can be described by a line
*

*
contains only two
variables
*

*
*

*
We can use the
analysis of variance procedure to test hypotheses about:
*

*
the proportion of one
population
*

*
two or more population
means
*

*
the mean of one
population
*

*
two or more population
proportions
*

*
*

*
For small degrees of freedom, the
chi-square distribution is:
*

*
Rectangular
*

*
skewed to the left
*

*
symmetric
*

*
skewed to the right
*

*
*

*
The alternative
hypothesis is a claim about a:
*

*
statistic, where the
claim is assumed to be false until it is declared true
*

*
statistic, where the
claim is assumed to be true if the null hypothesis is declared
false
*

*
population parameter,
where the claim is assumed to be true until it is declared false
*

*
population parameter,
where the claim is assumed to be true if the null hypothesis is
declared false
*

*
*

*
In a hypothesis test, a Type II
error occurs when:
*

*
a false null hypothesis is rejected
*

*
a true null hypothesis is rejected
*

*
a true null hypothesis is not
rejected
*

*
a false null hypothesis is not
rejected
*

*
*

*
In a one-way ANOVA, we analyze
only one:
*

*
population
*

*
mean
*

*
variable
*

*
sample
*

*
*

*
To make tests of
hypotheses about more than two population means, we use the:
To make tests of
hypotheses about more than two population means, we use the:
*

*
normal distribution
normal distribution
*

*
chi-square distribution
chi-square distribution
*

*
analysis of
variance distribution
analysis of
variance distribution
*

*
t
distribution
t
distribution
t
t
distribution
*

*
*

*
A continuous random variable
x
has a right-skewed distribution with a
mean of 80 and a standard deviation of 12. The sampling
distribution of the sample mean for a sample of 50 elements taken
from this population is:
A continuous random variable
x
has a right-skewed distribution with a
mean of 80 and a standard deviation of 12. The sampling
distribution of the sample mean for a sample of 50 elements taken
from this population is:
A continuous random variable
x
x
has a right-skewed distribution with a
mean of 80 and a standard deviation of 12. The sampling
distribution of the sample mean for a sample of 50 elements taken
from this population is:
*

*
not normal
not normal
*

*
skewed to the left
skewed to the left
*

*
skewed to the right
skewed to the right
*

*
approximately normal
approximately normal
*

*
*

*
The model
y = A + Bx
is a:
The model
y = A + Bx
is a:
The model
y = A + Bx
y = A + Bx
is a:
*

*
probabilistic model
probabilistic model
*

*
stochastic model
stochastic model
*

*
nonlinear model
nonlinear model
*

*
deterministic model
deterministic model
*

*
*

*
For a goodness-of-fit
test, the frequencies obtained from the performance of an
experiment are the:
For a goodness-of-fit
test, the frequencies obtained from the performance of an
experiment are the:
*

*
expected frequencies
expected frequencies
*

*
observed frequencies
observed frequencies
*

*
objective frequencies
objective frequencies
*

*
subjective frequencies
subjective frequencies
*

*
*

*
An error that occurs
because of chance is called:
An error that occurs
because of chance is called:
*

*
probability error
probability error
probability error
*

*
mean error
mean error
*

*
nonsampling
error
nonsampling
error
*

*
sampling error
sampling error
*

*
*

*
What is the critical
value of
z for the hypothesis test?
What is the critical
value of
z for the hypothesis test?
z
*

*
-2.05
-2.05
*

*
-2.17
-2.17
*

*
-2.33
-2.33
*

*
-1.96
-1.96
*

*
*

*
The regression
model
y = A + Bx + e is:
The regression
model
y = A + Bx + e is:
y = A + Bx + e
*

*
a deterministic model
a deterministic model
*

*
a probabilistic
model
a probabilistic
model
*

*
an exact relationship
an exact relationship
*

*
a nonlinear model
a nonlinear model
*

*
*

*
A researcher wants to
test if elementary school children spend less than 30 minutes per
day on homework. The alternative hypothesis for this example will
be that the population mean is:
A researcher wants to
test if elementary school children spend less than 30 minutes per
day on homework. The alternative hypothesis for this example will
be that the population mean is:
*

*
less than
or equal to 30 minutes
less than
or equal to 30 minutes
*

*
less than 30
minutes
less than 30
minutes
*

*
equal to 30 minutes
equal to 30 minutes
*

*
not equal to 30
minutes
not equal to 30
minutes
*

*
*

*
What is the critical
value of
t for the hypothesis test?
What is the critical
value of
t for the hypothesis test?
t
*

*
2.738
2.738
*

*
2.449
2.449
*

*
2.733
2.733
*

*
2.441
2.441
*

*
*

*
You randomly select
two households and observe whether or not they own a telephone
answering machine. Which of the following is a simple event?
You randomly select
two households and observe whether or not they own a telephone
answering machine. Which of the following is a simple event?
*

*
At most one of them
owns a telephone answering machine.
At most one of them
owns a telephone answering machine.
*

*
Exactly one of them
owns a telephone answering machine.
Exactly one of them
owns a telephone answering machine.
*

*
At least one of them
owns a telephone answering machine.
At least one of them
owns a telephone answering machine.
*

*
Neither of the two
owns a telephone answering machine.
Neither of the two
owns a telephone answering machine.
*

*
*

*
For small degrees of
freedom, the chi-square distribution is:
For small degrees of
freedom, the chi-square distribution is:
*

*
rectangular
rectangular
*

*
skewed to the left
skewed to the left
*

*
skewed to the right
skewed to the right
skewed to the right
*

*
symmetric
symmetric
*

*
*

*
In a hypothesis test,
a Type I error occurs when:
In a hypothesis test,
a Type I error occurs when:
*

*
a true null hypothesis
is not rejected
a true null hypothesis
is not rejected
*

*
a false null
hypothesis is not rejected
a false null
hypothesis is not rejected
*

*
a false null
hypothesis is rejected
a false null
hypothesis is rejected
*

*
a true null hypothesis
is rejected
a true null hypothesis
is rejected
*

*
*

*
A quantitative
variable is the only type of variable that can:
A quantitative
variable is the only type of variable that can:
*

*
be used to prepare
tables
be used to prepare
tables
*

*
assume numeric values
for which arithmetic operations make sense
assume numeric values
for which arithmetic operations make sense
*

*
have no intermediate
values
have no intermediate
values
*

*
be graphed
be graphed
*

*
*

*
The mean of a discrete
random variable is its:
The mean of a discrete
random variable is its:
*

*
box-and-whisker
measure
box-and-whisker
measure
*

*
upper hinge
upper hinge
*

*
expected value
expected value
*

*
second quartile
second quartile
*

*
*

*
For a one-tailed test, the
p
-value is:
For a one-tailed test, the
p
-value is:
For a one-tailed test, the
p
p
-value is:
*

*
twice the area under
the curve between the mean and the observed value of the sample
statistic
twice the area under
the curve between the mean and the observed value of the sample
statistic
*

*
the area under the
curve between the mean and the observed value of the sample
statistic
the area under the
curve between the mean and the observed value of the sample
statistic
*

*
the area under the
curve to the same side of the value of the sample statistic as is
specified in the alternative hypothesis
the area under the
curve to the same side of the value of the sample statistic as is
specified in the alternative hypothesis
*

*
twice the area under
the curve to the same side of the value of the sample statistic as
is specified in the alternative hypothesis
twice the area under
the curve to the same side of the value of the sample statistic as
is specified in the alternative hypothesis
*

*
*

*
In a one-way ANOVA, we
analyze only one:
In a one-way ANOVA, we
analyze only one:
*

*
mean
mean
*

*
population
population
*

*
sample
sample
*

*
variable
variable
*

*
*

*
The alternative
hypothesis is a claim about a:
The alternative
hypothesis is a claim about a:
*

*
parameter, where the
claim is assumed to be true if the null hypothesis is declared
false
parameter, where the
claim is assumed to be true if the null hypothesis is declared
false
*

*
statistic, where the
claim is assumed to be true if the null hypothesis is declared
false
statistic, where the
claim is assumed to be true if the null hypothesis is declared
false
*

*
statistic, where the
claim is assumed to be false until it is declared true
statistic, where the
claim is assumed to be false until it is declared true
*

*
parameter, where the
claim is assumed to be true until it is declared false
parameter, where the
claim is assumed to be true until it is declared false
*

* *

A researcher wants to test if the mean annual salary of all lawyers in a city is different than $110,000. The null hypothesis for this example will be that the population mean is: A researcher wants to test if the mean annual salary of all lawyers in a city is different than $110,000. The null hypothesis for this example will be that the population mean is:

greater than to $110,000 greater than to $110,000

not equal to $110,000 not equal to $110,000

less than to $110,000 less than to $110,000

equal to $110,000 equal to $110,000

A qualitative variable is the only type of variable that: A qualitative variable is the only type of variable that:

cannot be graphed cannot be graphed

can assume an uncountable set of values can assume an uncountable set of values

can assume numerical values can assume numerical values

cannot be measured numerically cannot be measured numerically

You toss a coin nine times and observe 3 heads and 6 tails. This event is a: You toss a coin nine times and observe 3 heads and 6 tails. This event is a:

multiple outcome multiple outcome

multinomial sample point multinomial sample point

simple event simple event

compound event compound event

Which of the following pairs of events are mutually exclusive? Which of the following pairs of events are mutually exclusive?

Female and male Female and male

No and yes No and yes

Female and yes Female and yes

Female and no Female and no

The
*
p
-value is the:
The
p
-value is the:
The
p
p
-value is the:
*

*
smallest significance
level at which the null hypothesis can be rejected
smallest significance
level at which the null hypothesis can be rejected
*

*
smallest significance
level at which the null hypothesis can be rejected
smallest significance
level at which the null hypothesis can be rejected
*

*
largest significance
level at which the null hypothesis can be rejected
largest significance
level at which the null hypothesis can be rejected
*

*
largest significance
level at which the alternative hypothesis can be rejected
largest significance
level at which the alternative hypothesis can be rejected
*

*
*

*
Which of the following
assumptions is not required to use ANOVA?
Which of the following
assumptions is not required to use ANOVA?
*

*
The populations from
which the samples are drawn have the same variance.
The populations from
which the samples are drawn have the same variance.
*

*
The populations from
which the samples are drawn are (approximately) normally
distributed.
The populations from
which the samples are drawn are (approximately) normally
distributed.
*

*
The samples drawn from
different populations are random and independent.
The samples drawn from
different populations are random and independent.
*

*
All samples are of the
same size.
All samples are of the
same size.
*

*
*

*
Two paired or matched
samples would imply that:
Two paired or matched
samples would imply that:
*

*
two data values are
collected from the same source (elements) for two dependent samples
two data values are
collected from the same source (elements) for two dependent samples
*

*
two data values are
collected from the same source (elements) for two independent
samples
two data values are
collected from the same source (elements) for two independent
samples
*

*
data are collected on
two variables from the elements of two independent samples
data are collected on
two variables from the elements of two independent samples
*

*
data are collected on
one variable from the elements of two independent samples
data are collected on
one variable from the elements of two independent samples
*

*
*

*
We can use the
analysis of variance procedure to test hypotheses about:
We can use the
analysis of variance procedure to test hypotheses about:
*

*
the proportion of one
population
the proportion of one
population
*

*
the mean of one
population
the mean of one
population
*

*
two or more population
proportions
two or more population
proportions
*

*
two or more population
means
two or more population
means
*

*
*

*
The graph of a
cumulative frequency distribution is a(n):
The graph of a
cumulative frequency distribution is a(n):
*

*
frequency histogram
frequency histogram
*

*
line graph
line graph
*

*
stem-and-leaf display
stem-and-leaf display
*

*
ogive
ogive
*

*
*

*
In a hypothesis test,
a Type II error occurs when:
In a hypothesis test,
a Type II error occurs when:
*

*
a false null
hypothesis is rejected
a false null
hypothesis is rejected
*

*
a false null
hypothesis is not rejected
a false null
hypothesis is not rejected
*

*
a true null hypothesis
is not rejected
a true null hypothesis
is not rejected
*

*
a true null hypothesis
is rejected
a true null hypothesis
is rejected
*

*
*

*
The mean of a discrete
random variable is the mean of its:
The mean of a discrete
random variable is the mean of its:
*

*
percentage
distribution
percentage
distribution
*

*
frequency distribution
frequency distribution
*

*
probability distribution
probability distribution
*

*
second and third
quartiles
second and third
quartiles
*

*
*

*
If you divide the
number of elements in a sample with a specific characteristic by
the total number of elements in the sample, the dividend is the:
If you divide the
number of elements in a sample with a specific characteristic by
the total number of elements in the sample, the dividend is the:
*

*
sample
distribution
sample
distribution
*

*
sample proportion
sample proportion
sample proportion
*

*
sampling
distribution
sampling
distribution
*

*
sample mean
sample mean
*

*
*

*
A linear regression:
A linear regression:
*

*
gives a relationship
between two variables that can be described by a line
gives a relationship
between two variables that can be described by a line
*

*
gives a relationship
between two variables that cannot be described by a line
gives a relationship
between two variables that cannot be described by a line
*

*
gives a relationship
between three variables that can be described by a line
gives a relationship
between three variables that can be described by a line
*

*
contains only two
variables
contains only two
variables
*

*
*

*
We can use the
analysis of variance procedure to test hypotheses about:
We can use the
analysis of variance procedure to test hypotheses about:
*

*
the proportion of one
population
the proportion of one
population
*

*
two or more population
means
two or more population
means
*

*
the mean of one
population
the mean of one
population
*

*
two or more population
proportions
two or more population
proportions
*

*
*

*
For small degrees of freedom, the
chi-square distribution is:
For small degrees of freedom, the
chi-square distribution is:
*

*
Rectangular
Rectangular
*

*
skewed to the left
skewed to the left
*

*
symmetric
symmetric
*

*
skewed to the right
skewed to the right
*

*
*

*
The alternative
hypothesis is a claim about a:
The alternative
hypothesis is a claim about a:
*

*
statistic, where the
claim is assumed to be false until it is declared true
statistic, where the
claim is assumed to be false until it is declared true
*

*
statistic, where the
claim is assumed to be true if the null hypothesis is declared
false
statistic, where the
claim is assumed to be true if the null hypothesis is declared
false
*

*
population parameter,
where the claim is assumed to be true until it is declared false
population parameter,
where the claim is assumed to be true until it is declared false
*

*
population parameter,
where the claim is assumed to be true if the null hypothesis is
declared false
population parameter,
where the claim is assumed to be true if the null hypothesis is
declared false
*

*
*

*
In a hypothesis test, a Type II
error occurs when:
In a hypothesis test, a Type II
error occurs when:
*

*
a false null hypothesis is rejected
a false null hypothesis is rejected
*

*
a true null hypothesis is rejected
a true null hypothesis is rejected
*

*
a true null hypothesis is not
rejected
a true null hypothesis is not
rejected
*

*
a false null hypothesis is not
rejected
a false null hypothesis is not
rejected
*

*
*

*
In a one-way ANOVA, we analyze
only one:
In a one-way ANOVA, we analyze
only one:
*

*
population
population
*

*
mean
mean
*

*
variable
variable
*

*
sample
sample
*

*
*

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