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#7. Suppose that the population standard deviation is known to be 5. We have hypotheses regarding the population mean: Ho: H = 40 Hi:u #

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#7. Suppose that the population standard deviation is known to be 5. We have hypotheses regarding the population mean: Ho: H = 40 Hi:u # 40 We want to test these hypotheses using a 0.05 level of significance and using a sample mean, X, of a random sample of 100 as a test statistic. What is the critical region for X? #8. Suppose that the population standard deviation is known to be 5. We have hypotheses regarding the population mean: Ho: H = 40 Hi:u # 40 We want to test these hypotheses using a 0.05 level of significance and using a sample mean, X, of a random sample of 100 as a test statistic. What is the critical region for the z-score of X

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