A random sample of the closing stock prices in dollars for a company in a recent year is listed below. Assume that σ is $2.11. Construct the 90% and 99% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. 20.15 17.59 17.94 15.26 17.87 18.01 21.76 17.34 21.42 16.29 17.61 15.77 20.71 18.71 17.22 15.71 The 90% confidence interval is ($ ☐ $ ). (Round to two decimal places as needed)

A random sample of the closing stock prices in dollars for a company in a recent year is listed below. Assume that σ is $2.11. Construct the 90% and 99% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. 20.15 17.59 17.94 15.26 17.87 18.01 21.76 17.34 21.42 16.29 17.61 15.77 20.71 18.71 17.22 15.71 The 90% confidence interval is ($ ☐ $ ). (Round to two decimal places as needed)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 26PFA

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