10.2 Assume that you have a sample of n, 8, with the sample mean X= 42, and a sample standard deviation S1 = 4, and you= 15 from another population

have an independent sample of n2 with a sample mean of X2 = 34 and a sample standard deviation S, = 5. a. What is the value of the pooled-variance tsrAT test statistic fortesting Ho: =2? b. In finding the critical value, how many degrees of freedom arethere? d. What is your statistical decision? c. Using the level of significance a 0.01, what is the critical value for a one-tail test of the hypothesis Ho: u1 s p2 against the alternative, H: u1>u2 ?