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A simple random sample of size n 19 is drawn from a population that is...

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A simple random sample of size n 19 is drawn from a population that is normally distributed The sample mean is found to be x 64 anc the sample standard deviation is found to be s 20 Construct a 90 confidence interval about the population mean The lower bound is 56 06 The upper bound is 71 94 Round to two decimal places as needed

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