You are given the sample mean and the population standard deviation. Use this information to construct the90% and95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. From a random sample of 42 businessdays, the mean closing price of a certain stock was $124.10. Assume the population standard deviation is $9.88.

A. The 90% confidence interval is (_____, and ______)

B. The 95% confident interval is (______, and _______)