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I'm so confused on how to get a a/2 Score: 0 of 1 pt X 11.1.13 Construct a confidence interval for p, - p, at

I'm so confused on how to get a a/2

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Score: 0 of 1 pt X 11.1.13 Construct a confidence interval for p, - p, at the given level of confidence. x1 = 375, n, = 513, X2 = 412, n, = 571, 99% confidence The researchers are % confident the difference between the two population (Use ascending order. Type an integer or decimal rounded to three decimal pla

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