A random sample of the closing stock prices in dollars for a company in a recent year is listed below. Assume that sigma is$2.31. Construct the 90% and 99% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. 20.66 16.32 19.16 22.78 19.68 17.76 21.39 16.06 15.33 19.89 20.08 17.37 19.65 21.56 16.01 16.12 The 90% confidence interval is left parenthesis $ nothing comma $ nothing right parenthesis . (Round to two decimal places as needed.) The99% confidence interval is left parenthesis $ nothing comma $ nothing right parenthesis . (Round to two decimal places asneeded.) Which statement below interprets the results correctly?90% of the mean closing stock prices are in the 90% confidence interval and 99% of the mean closing stock prices are in the 99% confidence interval. The probability that the mean closing stock price is in the 90% confidence interval is about 90% and the probability that the mean closing stock price is in the 99% confidence interval is about 99%. The 90% confidence interval contains the mean closing stock price 90% of the time and the 99% confidence interval contains the mean closing stock price 99% of the time. There is 90% confidence that the mean closing stock price is in the 90% confidence interval and 99% confidence that the mean closing stock price is in the 99% confidence interval. Which interval is wider? The 90% confidence interval The 99% confidence interval
