In order to compare the means of two populations, independent random samples of 135 observations are selected from each population, with the following results: Sample 1 Sample 22 T2s1 = 185 s2 = 140(a) Use a 95 % confidence interval to estimate the difference between the population means (u, - U).< (H1 – H2) <(b) Test the null hypothesis: Ho : (1 – H2) = 0 versus the alternative hypothesis: Ha : (µ1 – H2) # 0. Using a = 0.05, give the following:() the test statistic z =(ii) the positive critical z score(iii) the negative critical z scoreThe final conclusion isO We can reject the null hypothesis (41 – H2) = 0 in favor ofthe alternative (41 – H2) + 0.O There is not sufficient evidence to reject the null hypothesis (u1 – 2) = 0.(C) Test the null hypothesis: H, : (µ1 – H2) = 29 versus the alternative hypothesis: H, : (µ1 – µ2) 29. Using a = 0.05, give the following:(i) the test statistic z =(ii) the positive critical z score(iii) the negative critical z scoreThe final conclusion isO We can reject the null hypothesis (41 – H2) = 29 in favor of the alternative (41 – Hz) + 29.O There is not sufficient evidence to reject the null hypothesis (41 - H2) = 29.

Name: In order to compare the means of two populations, independent random s
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: In order to compare the means of two populations, independent random samples of 135 observations are selected from each population, with the following results: Sample 1 Sample 22 T2s1 = 185 s2 = 140(a) Use a 95 % confidence interval to estimate the d