Advanced Placement (AP), 03.03.2021 22:20 milkshakegrande101

Population 1 is Normally distributed with a mean of 40 and a standard deviation of 4, and population 2 is Normally distributed with a mean of 25 and a standard deviation of 7. Suppose we select independent SRSs of n1 = 100 and n2 = 85 from population 1 and 2 respectively. Which of the following are the values of the mean and the standard deviation of the sampling distribution of x1-x2 ?

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Population 1 is Normally distributed with a mean of 40 and a standard deviation of 4, and population...