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How do I construct a confidence interval for p1p2 at the given level of confidence?

How do I construct a confidence interval for p1−p2 at the given level of confidence?

 x1 = 372​, n1 = 515​, x2 = 431​, n2 = 551​, 95​% confidence.

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95% confidence interval = (p1 - p2) ... View the full answer

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