A random sample of the closing stock prices in dollars for a company in a recent year is listed below. Assume that is $2.12. Construct the 90% and 99% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. 20.17 17.02 17.45 15.23 The 90% confidence interval is ($.$). (Round to two decimal places as needed.) 16.17 18.96 18.15 18.04 16.71 22.03 16.91 18.43 19.43 22.79 20.41 21.98

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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. If​ convenient, use technology to construct the confidence intervals.   10. A random sample of 40 home theater systems has a mean price of ​$126.00. Assume the population standard deviation is ​$16.70. Construct a​ 90% confidence interval for the population mean.   The​ 90% confidence interval is ​(nothing​,nothing​)

You are interested in finding a 90% confidence interval for the average number of days of class that college students miss each year. The data below show the number of missed days for 13 randomly selected college students. Round answers to 3 decimal places where possible.   7 8 8 0 2 11 6 10 2 0 1 3 1   With 90% confidence the population mean number of days of class that college students miss is between  and   days.

X) 6.1.36-T Question He 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 44 business days, the mean closing price of a certain stock was $116.84. Assume the population standard deviation is $9.81. The 90% confidence interval is ( ). (Round to two decimal places as needed.) Question Viewer Enter your answer in the edit fields and then click Check Answer. 3 parts remaining Clear All Check Answer 11:13 AM 2 Type here to search N 1/12/2021 Del PrtScn F8 Home F9 End F10 PgUp F11 Ins DII F5 F12 Esc F6 F7 F1 F2 F3 F4 C@ %23 & Backsp 8 9- 2 P LEGO (8) 7

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A stock price is currently $40. It is known that at the end of 1 year it will be either $48or $32. The risk-free Interest rate is 5% per annum with continuous compounding. What is the value of a portfolio today with a strike price of $527 (use A-0.25) Hint: draw a tree