Sketch the sampling distribution of 1pn 1 - pn 22 based on independent random samples of n1

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Sketch the sampling distribution of 1pn 1 - pn 22 based on independent random samples of n1 = 200 and n2 = 100 observations from two binomial populations with probabilities of success p1 = .5 and p2 = .9, respectively.

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