Answer all questions with explanation

8.? Independent random samples from normal populations m produced the results shown in the next table. m Sample 1 Sample 2 1.2 4.2 3.1 2.? 1.7 3.6 2.8 3.9 3.0 a. Calculate the pooled estimate of 01. I). Do the data provide sufcient evidence to indicate that \"2 :> m? Test using or = .10. c. Find a 90% confidence interval for (m p.22). d. Which of the two inferential procedures, the test of hypothesis in part b or the confidence interval in part 1:, provides more information about (in - pg)