Business : Data Set Exercise Assignment 10

Running head: KLINGEL-BUS 87300-ASSIGNMENT 10Data Set Assignment 10NameUniversityDate1KLINGEL-BUS 87300-ASSIGNMENT 102Data Set Assignment 101. Refer to the Real Estate data, which report information on the homes sold in Goodyear,Arizona, last year.a. At the .01 significance level, can we conclude that there is a difference in the meanselling price of homes with a pool and homes without a pool?a)State the hypotheses. The first step is to state the null hypothesis and an alternativehypothesis.Null hypothesis: ?1 - ?2 = 0Alternative hypothesis: ?1 - ?2? 0Note that these hypotheses constitute a two-tailed test. The null hypothesis will berejected if the difference between sample means is too big or if it is too small.Formulate an analysis plan. For this analysis, the significance level is 0.01. Usingsample data, we will conduct a two-sample t-test of the null hypothesis.Analyze sample data. Using sample data, we compute the standard error (SE), degreesof freedom (DF), and the t statistic test statistic (t).KLINGEL-BUS 87300-ASSIGNMENT 103SE = sqrt[(s12/n1) + (s22/n2)]SE = 8.25DF = 103t = [ (x1 - x2) - d ] / SEt = - 3.12where s1 is the standard deviation of sample 1, s2 is the standard deviation of sample 2,n1 is the size of sample 1, n2 is the size of sample 2, x1 is the mean of sample 1, x2 is the mean ofsample 2, d is the hypothesized difference between the population means, and SE is the standarderror.Since we have a two-tailed tes ...


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