Number of Jobs A sociologist found that in a sample of 49 retired men, the average number of jobs they had during their lifetimes was 6.8. The population standard deviation is 2.4. Use a graphing calculator and round the answers to one decimal place. Part 1 of 4 The best point estimate of the mean is 6.8 Part 2 of 4 Find the 91% confidence interval of the mean number of jobs. 6.2 <μ< 7.4 Part: 2/4 Part 3 of 4 Find the 95% confidence interval of the mean number of jobs. <με x
Number of Jobs A sociologist found that in a sample of 49 retired men, the average number of jobs they had during their lifetimes was 6.8. The population standard deviation is 2.4. Use a graphing calculator and round the answers to one decimal place. Part 1 of 4 The best point estimate of the mean is 6.8 Part 2 of 4 Find the 91% confidence interval of the mean number of jobs. 6.2 <μ< 7.4 Part: 2/4 Part 3 of 4 Find the 95% confidence interval of the mean number of jobs. <με x
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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part 3
![**Number of Jobs**
A sociologist found that in a sample of 49 retired men, the average number of jobs they had during their lifetimes was 6.8. The population standard deviation is 2.4. Use a graphing calculator and round the answers to one decimal place.
---
**Part 1 of 4**
The best point estimate of the mean is \( 6.8 \).
---
**Part 2 of 4**
Find the 91% confidence interval of the mean number of jobs.
\[ 6.2 < \mu < 7.4 \]
---
**Part 3 of 4**
Find the 95% confidence interval of the mean number of jobs.
\[ \_\_\_ < \mu < \_\_\_ \]
---
In the image, there is a progress indicator under “Part” that shows the user is on “Part 2 / 4” with a blue progress bar partially filled. Additionally, two green checkmarks indicate that parts 1 and 2 have been successfully completed. The section for part 3 has input fields for finding the confidence interval and a refresh button.
This information helps students to understand how to calculate confidence intervals for the mean number of jobs held by individuals in a sample, using given statistical data and a graphing calculator.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5c4dbd8d-055d-4a36-9216-35dfba9d5ff4%2F1f0e1486-315c-4afc-bb10-e5f900b1ee76%2F813bhyc_processed.png&w=3840&q=75)
Transcribed Image Text:**Number of Jobs**
A sociologist found that in a sample of 49 retired men, the average number of jobs they had during their lifetimes was 6.8. The population standard deviation is 2.4. Use a graphing calculator and round the answers to one decimal place.
---
**Part 1 of 4**
The best point estimate of the mean is \( 6.8 \).
---
**Part 2 of 4**
Find the 91% confidence interval of the mean number of jobs.
\[ 6.2 < \mu < 7.4 \]
---
**Part 3 of 4**
Find the 95% confidence interval of the mean number of jobs.
\[ \_\_\_ < \mu < \_\_\_ \]
---
In the image, there is a progress indicator under “Part” that shows the user is on “Part 2 / 4” with a blue progress bar partially filled. Additionally, two green checkmarks indicate that parts 1 and 2 have been successfully completed. The section for part 3 has input fields for finding the confidence interval and a refresh button.
This information helps students to understand how to calculate confidence intervals for the mean number of jobs held by individuals in a sample, using given statistical data and a graphing calculator.
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