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If random samples of the given sizes are drawn from populations with the given proportions, find the mean and standard errorUse the normal distribution to find a confidence interval for a difference in proportions P, – pa given the relevant sample r

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ni = 210 D2 = 240 , Pl=0.7 P2 = 0.8 P-pes mean =_ 0.7 -0.8 = -0.|| L. 7110. 10.7(10.0 P2 (192) - P, (1P) 0.8(1-0.8) standarde

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