Refer to Exercise 13.10. Let A and B, respectively, denote the mean scores at the end of
Chapter 13, Problem 13.27(choose chapter or problem)
Refer to Exercise 13.10. Let A and B, respectively, denote the mean scores at the end of the semester for the populations of extremely hostile students who were treated throughout that semester by methods A and B, respectively. Find a 95% confidence interval for a A. b B. c (A B).
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