Refer to Exercise 10.10. Perform a test of hypothesis that is intended to show that the mean for magazine 1 is more than 2 words larger than the mean for magazine 2.
(a) Formulate the null and alternative hypotheses. (Define any symbols you use.)
(b) State the test statistic and the rejection region with a = .05.
(c) Perform the test at a = .05. Also, find the P-value and comment.