Question: A simple random sample of size (n=40) is drawn from a population. The sample mean is found to be (bar{x}=120.8), and the sample standard deviation

A simple random sample of size $n=40$ is drawn from a population. The sample mean is found to be $\bar{x}=120.8$, and the sample standard deviation is found to be $s=12.3$. Construct a $99 \%$ confidence interval for the population mean.

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