Question: A random sample of n = 9 values taken from a normally distributed population with a population variance of 25 resulted in the following sample

A random sample of n = 9 values taken from a normally distributed population with a population variance of 25 resulted in the following sample values:

Use the sample values to construct a 90% confidence interval estimate for the population mean.

53 46 55 45 44 52 46 60 49

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