Assume that you have a sample of n, =9, with the sample mean X, = 41, and a sample standard deviation of S, = 4, and you have an independent sampl of n2 = 13 from another population with a sample mean of X2 = 37 and the sample standard deviation S2 = 7. Complete parts (a) through (d). Click here for page 1 of critical values of t. Click here for page 2 of critical values of t. a. What is the value of the pooled-variance tSTAT test statistic for testing Ho: #1 = #2? STAT = 1.5417 (Type an integer or a decimal rounded to four decimal places as needed.) b. In finding the critical value to /2, how many degrees of freedom are there? 20 degrees of freedom c. Using a significance level of a = 0.1, what is the critical value for a one-tail test of the hypothesis Ho: 1 $ 2 against the alternative H1: 1 > #2? The critical value is (Type an integer or a decimal rounded to four decimal places as needed.)