The wrong alternative. One of your friends is comparing movie ratings byfemale and male
Chapter 0, Problem 15.43(choose chapter or problem)
The wrong alternative. One of your friends is comparing movie ratings byfemale and male students for a class project. She starts with no expectations as towhich sex will rate a movie more highly. After seeing that women rate aparticular movie more highly than men, she tests a one-sided alternative aboutthe mean ratings:H0: F = MHa: F > MShe finds z = 2.1 with one-sided P-value P = 0.0179.(a) Explain why your friend should have used the two-sided alternativehypothesis.(b) What is the correct P-value for z = 2.1?
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