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 confil intervals. From a random sample of 44 business days, the mean closing price of a certain stock was \( \$ 115.05 \). Assume the population standard deviation is \( \$ 9.77 \). The \( 90 \% \) confidence interval is \( (\square, \square) \). (Round to two decimal places as needed.) The \( 95 \% \) confidence interval is \( (\square, \square) \). (Round to two decimal places as needed.) Which interval is wider? Choose the correct answer below. The \( 90 \% \) confidence interval Therpret the results.
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