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8. Consider the following hypothesis testing problem: Ho : 1 = 5, H1 : = 7, where u is the population mean. Suppose that you

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8. Consider the following hypothesis testing problem: Ho : 1 = 5, H1 : = 7, where u is the population mean. Suppose that you have a random sample {X; : i = 1, 2, ..., 25}. The population variance of X is known as being equal to 4. Calculate the power of test with a 5% significance level

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