Chp 8 Mod 17 2. To test the hypothesis in Exercise 1, the admissions counselors select a random sample of freshmen and compare their scores on the SAT to those of the population of upper classmen. They find that the freshmen do in fact have a higher mean SAT score. However, what they are unaware of is that the sample of freshmen was not representative of all freshmen at Brainy University. In fact, the sample over-represented those with high scores and underrepresented those with low scores. What type of error (Type I or Type II) did the counselors make?

4. What are the appropriate H0 and Ha for each of the following research studies? In addition, note whether the hypothesis test is one or two-tailed.

Chp 8 Mod 18 2. What is the standard error of the difference between means?

4. A college student is interested in whether there is a difference between male and female students in the amount of time spent studying each week. The student gathers information from a random sample of male and female students on campus. Amount of time spent studying is normally distributed. The data follow.

Chp 8 Mod 17 2. To test the hypothesis in Exercise 1, the admissions counselors select a random sample of freshmen and compare their scores on the SAT to those of the population of upper classmen. They find that the freshmen do in fact have a higher mean SAT score. However, what they are unaware of is that the sample of freshmen was not representative of all freshmen at Brainy University. In fact, the sample over-represented those with high scores and underrepresented those with low scores. What type of error (Type I or Type II) did the counselors make?

4. What are the appropriate H0 and Ha for each of the following research studies? In addition, note whether the hypothesis test is one or two-tailed.

Chp 8 Mod 18 2. What is the standard error of the difference between means?

4. A college student is interested in whether there is a difference between male and female students in the amount of time spent studying each week. The student gathers information from a random sample of male and female students on campus. Amount of time spent studying is normally distributed. The data follow.

Chp 8 Mod 17 2. To test the hypothesis in Exercise 1, the admissions counselors select a random sample of freshmen and compare their scores on the SAT to those of the population of upper classmen. They find that the freshmen do in fact have a higher mean SAT score. However, what they are unaware of is that the sample of freshmen was not representative of all freshmen at Brainy University. In fact, the sample over-represented those with high scores and underrepresented those with low scores. What type of error (Type I or Type II) did the counselors make?

4. What are the appropriate H0 and Ha for each of the following research studies? In addition, note whether the hypothesis test is one or two-tailed.

Chp 8 Mod 18 2. What is the standard error of the difference between means?

4. A college student is interested in whether there is a difference between male and female students in the amount of time spent studying each week. The student gathers information from a random sample of male and female students on campus. Amount of time spent studying is normally distributed. The data follow.

Chp 8 Mod 18 2. What is the standard error of the difference between means?