Exercise 10.10 (Inferences About the Difference Between Two Population Means: Sigmas Unknown) Consider the following hypothesis test. Ho : /1 - 12 = 0 Ha : /1 - /42 7 0 The following results are from independent samples taken from two populations. Sample 1 Sample 2 1 = 35 n = 40 $1 = 13.6 $7 = 10.1 51 = 5.2 $2 = 8.5 a. What is the value of the test statistic (to 2 decimals)? b. What is the degrees of freedom for the t distribution (round the answer to the previous whole number)? c. What is the p-value? Use Table 2 from Appendix B. The area in the upper tail is - Select your answer - v ; two-tailed p-value is |- Select your answer - d. At a = 0.05, what is your conclusion? p-value is - Select your answer - Ho