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A publisher wants to estimate the mean length of time (in minutes) all adults spend reading newspapers. To determine this estimate, the publisher takes a random sample of 15 people and obtains the results below. From past studies, the publisher assumes o is 1.7 minutes and that the population of times is normally distributed. 8. 9. 10 11 8. 7 7 12 7 11 8. 8. Construct the 90% and 99% confidence intervals for the population mean. Which interval is wider? If convenient, use technology to construct the confidence intervals. The 90% confidence interval is ( ). (Round to one decimal place as needed.)

A publisher wants to estimate the mean length of time (in minutes) all adults spend reading newspapers. To determine this estimate, the publisher takes a random sample of 15 people and obtains the results below. From past studies, the publisher assumes o is 1.7 minutes and that the population of times is normally distributed. 8. 9. 10 11 8. 7 7 12 7 11 8. 8. Construct the 90% and 99% confidence intervals for the population mean. Which interval is wider? If convenient, use technology to construct the confidence intervals. The 90% confidence interval is ( ). (Round to one decimal place as needed.)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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A publisher wants to estimate the mean length of time (in minutes) all adults spend reading newspapers. To determine this estimate, the publisher takes a random sample of 15 people and obtains the results below. From past studies, the publisher assumes σ is 1.7 minutes and that the population of times is normally distributed. Sample Data (in minutes): 8, 6, 9, 10, 11, 6, 7, 7, 12, 7, 11, 6, 8, 9, 8 Task: Construct the 90% and 99% confidence intervals for the population mean. Which interval is wider? If convenient, use technology to construct the confidence intervals. Question: The 90% confidence interval is [___, ___]. (Round to one decimal place as needed.) Instructions: Enter your answer in the edit fields and then click Check Answer. There are 2 parts remaining to be completed.
Transcribed Image Text:A publisher wants to estimate the mean length of time (in minutes) all adults spend reading newspapers. To determine this estimate, the publisher takes a random sample of 15 people and obtains the results below. From past studies, the publisher assumes σ is 1.7 minutes and that the population of times is normally distributed. Sample Data (in minutes): 8, 6, 9, 10, 11, 6, 7, 7, 12, 7, 11, 6, 8, 9, 8 Task: Construct the 90% and 99% confidence intervals for the population mean. Which interval is wider? If convenient, use technology to construct the confidence intervals. Question: The 90% confidence interval is [___, ___]. (Round to one decimal place as needed.) Instructions: Enter your answer in the edit fields and then click Check Answer. There are 2 parts remaining to be completed.
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