Question: You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population

You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals.

From a random sample of

36

business days, the mean closing price of a certain stock was

$115.89.

Assume the population standard deviation is

$10.70.

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