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Assuming that the two populations have unequal and unknown population

Assuming that the two populations have unequal and unknown population standard deviations, construct a 99% confidence interval for µ1 – µ2 for the following.

n1 = 48 1 = .863 s1 = .176

n2 = 46 2 = .796 s1 = .068

n1 = 48 1 = .863 s1 = .176

n2 = 46 2 = .796 s1 = .068

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