Question: solve it Problem 5. A sample of size 20 is drawn from a normal distribution with unknown variance and unknown mean u. Let x be

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Problem 5. A sample of size 20 is drawn from a normal distribution with unknown variance and unknown mean u. Let x be the sample mean and s the sample standard deviation. One of the following formulas gives the 99% two-sided confidence interval on u, determine which. S S A. x - to.005,19 20 M

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