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K You are given the sample mean and the population standard deviation. Use this information to construct the 90% and Question list 95% confidence intervals
K You are given the sample mean and the population standard deviation. Use this information to construct the 90% and Question list 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. From a random sample of 42 business days, the mean closing price of a certain stock was $109.06. Assume the O Question 1 population standard deviation is $10.20. . . . O Question 2 The 90% confidence interval is (,). (Round to two decimal places as needed.) O Question 3 The 95% confidence interval is (). (Round to two decimal places as needed.) Which interval is wider? Choose the correct answer below. O Question 4 O The 90% confidence interval O The 95% confidence intervalInterpret the results. "'22- A. You can be certain that the closing price of the stock was within the 90% condence interval for approximately 38 of the 42 days, and was within the 95% condence interval for approximately 40 of the 42 days. "'22- B. You can be certain that the population mean price of the stock is either between the lower bounds of the 90% and 95% confidence intervals or the upper bounds of the 90% and 95% condence intervals. ('2: C. You can be 90% condent that the population mean price of the stock is outside the bounds of the 90% confidence interval, and 95% confident for the 95% interval. {"13- D. You can be 90% condent that the population mean price of the stock is between the bounds of the 90% confidence interval, and 95% confident for the 95% interval
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