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Suppose that a random sample of 50 observations is selected from a population that is N(106, 144). The sample mean is calculated as 108. Test

Suppose that a random sample of 50 observations is selected from a population that is N(106, 144). The sample mean is calculated as 108. Test the hypothesis H0 : = 106 against the alternative H1 : > 106 at the 5% significance level.

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