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In a sample of 80 Americans, 55% wished that they were rich. In a sample of 90 Europeans, 45% wished

Question: In a sample of 80 Americans, 55% wished that they were rich. In a sample of 90 Europeans, 45% wished that they were rich. At a = 0.01, is there a difference in the proportions? Find the 99% confidence interval for the difference of the two proportions.

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