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When Testing Hypotheses About and Constructing Confidence Intervals for μ1

Question 7

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When testing hypotheses about and constructing confidence intervals for μ1 − μ2, we utilize the statistic, When testing hypotheses about and constructing confidence intervals for μ<sub>1</sub> − μ<sub>2</sub>, we utilize the statistic, . What are the mean and variance of the sampling distribution of ? . What are the mean and variance of the sampling distribution of When testing hypotheses about and constructing confidence intervals for μ<sub>1</sub> − μ<sub>2</sub>, we utilize the statistic, . What are the mean and variance of the sampling distribution of ? ?

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