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Math · Statistics And Probability
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. Independent random samples of 800 observations each are selected from two binomial populations. The sample from population 1 produced 320 successes and the sample from population 2 produced 400 successes. Test H0 : (p 1 – p 2 ) = 0 against H α : (p 1 – p 2 ) ≠ 0 using α = .01. A. z = –4.16 B. z = –3.96 C. z = –4.02 D. z = –4.68

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