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A simple random sample of size n = 40 is drawn from a population. The sample mean is found to be x = 121.9 and

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A simple random sample of size n = 40 is drawn from a population. The sample mean is found to be x = 121.9 and the sample standard deviation is found to be s = 12.8. Construct a 99% confidence interval for the population mean.The upper bound is (Round to two decimal places as needed.)

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