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The scores on the exam of a random sample of five midterm exams are 39, 54, 59, 61, 72. Assuming that the scores on the

The scores on the exam of a random sample of five midterm exams are 39, 54, 59, 61, 72. Assuming that the scores on the midterm exam have the Normal(, 2 ) distribution, find a 90% confidence interval for the standard deviation of scores

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