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 2.1 minutes and that the population of times is normally distributed. 11 10 8 6 6 10 12 6 12 12 11 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.) The 99% confidence interval is ( ). (Round to one decimal place as needed.) Which interval is wider? O The 99% confidence interval O The 90% confidence interval
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 2.1 minutes and that the population of times is normally distributed. 11 10 8 6 6 10 12 6 12 12 11 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.) The 99% confidence interval is ( ). (Round to one decimal place as needed.) Which interval is wider? O The 99% confidence interval O The 90% confidence interval
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Topic Video
Question
![**Estimating Mean Time Spent Reading Newspapers**
A publisher seeks to determine the mean time (in minutes) that adults spend reading newspapers. To find this estimate, a random sample of 15 people was taken, yielding the following times (in minutes):
9, 11, 10, 8, 6, 6, 10, 12, 6, 12, 9, 12, 11, 10, 10.
The publisher assumes a standard deviation (\(\sigma\)) of 2.1 minutes, with the times being normally distributed.
**Task: Constructing Confidence Intervals**
Construct the 90% and 99% confidence intervals for the population mean. Determine which interval is wider. Technology can be used to assist in constructing the intervals.
**Confidence Intervals:**
- **90% confidence interval:** ( ___ , ___ )
- *Round to one decimal place as needed.*
- **99% confidence interval:** ( ___ , ___ )
- *Round to one decimal place as needed.*
**Comparison:**
Which interval is wider?
- The 99% confidence interval
- The 90% confidence interval
For additional learning, viewers may explore statistical software tools for calculating confidence intervals to enhance understanding of how interval width varies with confidence levels.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F30ed8941-ce9c-4a61-953f-230a29ff6a7f%2F7e8d0c7a-4c16-4b2d-959e-1e6ee6e50a30%2Fvkajcak_processed.png&w=3840&q=75)
Transcribed Image Text:**Estimating Mean Time Spent Reading Newspapers**
A publisher seeks to determine the mean time (in minutes) that adults spend reading newspapers. To find this estimate, a random sample of 15 people was taken, yielding the following times (in minutes):
9, 11, 10, 8, 6, 6, 10, 12, 6, 12, 9, 12, 11, 10, 10.
The publisher assumes a standard deviation (\(\sigma\)) of 2.1 minutes, with the times being normally distributed.
**Task: Constructing Confidence Intervals**
Construct the 90% and 99% confidence intervals for the population mean. Determine which interval is wider. Technology can be used to assist in constructing the intervals.
**Confidence Intervals:**
- **90% confidence interval:** ( ___ , ___ )
- *Round to one decimal place as needed.*
- **99% confidence interval:** ( ___ , ___ )
- *Round to one decimal place as needed.*
**Comparison:**
Which interval is wider?
- The 99% confidence interval
- The 90% confidence interval
For additional learning, viewers may explore statistical software tools for calculating confidence intervals to enhance understanding of how interval width varies with confidence levels.
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 7 images
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Recommended textbooks for you
![MATLAB: An Introduction with Applications](https://www.bartleby.com/isbn_cover_images/9781119256830/9781119256830_smallCoverImage.gif)
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
![Probability and Statistics for Engineering and th…](https://www.bartleby.com/isbn_cover_images/9781305251809/9781305251809_smallCoverImage.gif)
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
![Statistics for The Behavioral Sciences (MindTap C…](https://www.bartleby.com/isbn_cover_images/9781305504912/9781305504912_smallCoverImage.gif)
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
![MATLAB: An Introduction with Applications](https://www.bartleby.com/isbn_cover_images/9781119256830/9781119256830_smallCoverImage.gif)
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
![Probability and Statistics for Engineering and th…](https://www.bartleby.com/isbn_cover_images/9781305251809/9781305251809_smallCoverImage.gif)
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
![Statistics for The Behavioral Sciences (MindTap C…](https://www.bartleby.com/isbn_cover_images/9781305504912/9781305504912_smallCoverImage.gif)
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
![Elementary Statistics: Picturing the World (7th E…](https://www.bartleby.com/isbn_cover_images/9780134683416/9780134683416_smallCoverImage.gif)
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
![The Basic Practice of Statistics](https://www.bartleby.com/isbn_cover_images/9781319042578/9781319042578_smallCoverImage.gif)
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
![Introduction to the Practice of Statistics](https://www.bartleby.com/isbn_cover_images/9781319013387/9781319013387_smallCoverImage.gif)
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman