(Answered) Question a sample of 500 male registered voters showed that

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Question: A sample of 500 male registered voters showed that 57% of them voted in the last presidential election. Another sample of 400 female registered voters showed that 55% of them voted in the same election.

a. Construct a 97% confidence interval for the difference between the proportions of all male and all female registered voters who voted in the last presidential election.

b. Test at the 1% significance level whether the proportion of all male voters who voted in the last presidential election is different from that of all female voters.

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