1. Hypotheses. Write the null and alternative

Chapter 20, Problem 1

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1. Hypotheses. Write the null and alternative hypothesesyou would use to test each of the following situations:a) A governor is concerned about his negativesthepercentage of state residents who express disapprovalof his job performance. His political committee paysfor a series of TV ads, hoping that they can keep thenegatives below 30%. They will use follow-up pollingto assess the ads effectiveness.b) Is a coin fair?c) Only about 20% of people who try to quit smokingsucceed. Sellers of a motivational tape claim that listeningto the recorded messages can help peoplequit.

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