Question: 4. Using a sample size of n = 400. If 0 = 20 and X = 72.5, find the value of the test statistic .

4. Using a sample size of n = 400. If 0

4. Using a sample size of n = 400. If 0 = 20 and X = 72.5, find the value of the test statistic . Consider the test HO : H = 70 versus Ha : M * 70

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