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

You are given the sample mean and the population standard deviation. Use

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 31 business days, the mean closing price of a certain stock was $118.23. Assume the population standard deviation is $10.26. The 90% confidence interval is (). (Round to two decimal places as needed.)

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