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Suppose we have independent random samples of size n 1 = 615 and n 2 = 505. The proportions of success in the two samples

Suppose we have independent random samples of size n₁= 615 and n₂= 505. The proportions of success in the two samples are p₁= .53 and p₂= .45. Find the 90% confidence interval for the difference in the two population proportions.

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