A publisher wants to estimate the mean length of time (in minutes) people and obtains the results below. From past studies, the publisher assumes o is 2,1 minutes and that the population of times is normally distributed. adults spend reading newspapers. To determine this estimate, the publisher takes a random sample of 15 8 7 10 12 8 10 12 12 9. 7 10 10 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) people and obtains the results below. From past studies, the publisher assumes o is 2,1 minutes and that the population of times is normally distributed. adults spend reading newspapers. To determine this estimate, the publisher takes a random sample of 15 8 7 10 12 8 10 12 12 9. 7 10 10 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 First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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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 2.1 minutes and that the population of times is normally distributed.
Sample Data: 8, 7, 10, 12, 6, 8, 10, 12, 9, 7, 10, 10, 7
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.)
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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 2.1 minutes and that the population of times is normally distributed.
Sample Data: 8, 7, 10, 12, 6, 8, 10, 12, 9, 7, 10, 10, 7
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.)
**Options:**
- Help Me Solve This
- View an Example
- Get More Help
**Additional Information:**
- There is a tool provided by Pearson for calculating the answer.
**Footer:**
- Copyright © 2021 Pearson Education Inc. All rights reserved. | Terms of Use | Privacy Policy | Permissions | Contact Us
**Navigation:**
- The screen provides additional functionality with options to "Clear All" and "Check Answer."
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