Question: A simple random sample of size n equals n=40 is drawn from a population. The sample mean is found to be x overbar equals x=120.9

A simple random sample of size n equals n=40 is drawn from a population. The sample mean is found to be x overbar equals x=120.9 and the sample standard deviation is found to be s equals s=12.6. Construct a99% confidence interval for the population mean.

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lower ?and upper? bound

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