Write the null and alternative hypotheses you use to test

Reference no: EM131419919

Write the null and alternative hypotheses you would use to test each of the following situations:

a) A governor is concerned about his negatives the percentage of state residents who express disapproval of his job performance. His political committee pays for a series of TV ads, hoping that they can keep the negatives below 30%. They will use follow-up polling to assess the ads effectiveness.

b) Is a coin fair?

c) Only about 20% of people who try to quit smoking succeed. Sellers of a motivational tape claim that listening to the recorded messages can help people quit.

Reference no: EM131419919

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