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One month before the election, a poll of 670 randomly selected voters showed 348 planning to...

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Basic Math

One month before the election, a poll of 670 randomly selectedvoters showed 348 planning to vote for a certain candidate. A weeklater it became known that he had had an extramarital affair, and anew poll showed only 450 out of 1020 voters supporting him. Isthere a significant decrease in voters support for hiscandidacy?

a) Write appropriate hypotheses.
b) Test the hypotheses, find the P-value and state your conclusion.Use ? = 0.01.
c) Create a 98% confidence interval for the change in votersopinion, and interpret your interval.
d) Comment on your interval in relation to your conclusion fromb).

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