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Given a simple random sample of size n = 18 from a Normal population with mean and standard deviation , we test the hypotheses (see

Given a simple random sample of size n = 18 from a Normal population with mean and standard deviation , we test the hypotheses

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Given a simple random sample of size n = 18 from a Normal population with mean , and standard deviation ,, we test the hypotheses HO: / = 2.5 HI: / > 2.5 : at the 5% significance level. If

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