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

One month before the election, a poll of 670 randomly selected voters showed 348 planning to vote for a certain candidate. A week later it became known that he had had an extramarital affair, and a new poll showed only 450 out of 1020 voters supporting him. Is there a significant decrease in voters support for his candidacy?

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

Expert Solution

milcah answered 1 year ago

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