**Number of Jobs**A sociologist found that in a sample of 50 retired men, the average number of jobs they had during their lifetimes was 6.9. The population standard deviation is 2.3.---**Part: 0 / 4**---### Part 1 of 4(a) Find the best point estimate of the mean.The best point estimate of the mean is: [ ] ---**Part: 1 / 4**---### Part 2 of 4(b) Find the 90% confidence interval of the mean number of jobs. Round intermediate and final answers to one decimal place.[ ] < μ < [ ]--- **Part 2 / 4**---**Part 3 of 4**(c) Find the 95% confidence interval of the mean number of jobs. Round intermediate and final answers to one decimal place.\[ \Box < \mu < \Box \]\[ \times \quad \circlearrowleft \]---**Part: 3 / 4**[Progress bar indicating completion status of Part 3 out of 4]---**Part 4 of 4**(d) Which is smaller? Explain why.The \[ \Box \]% confidence interval is smaller since there is (Choose one) \[ \bigtriangledown \] of a chance that the mean is contained in the interval as opposed to the \[ \Box \]% confidence interval.\[ \times \quad \circlearrowleft \]---**Explanation:**This section is part of an educational module on statistics, focusing on determining confidence intervals. The task involves calculating a 95% confidence interval for the mean number of jobs and explaining the relationship between the confidence level and the width of the interval.

Given,sample size(n)=50sample mean(x¯)=6.9standard deviation(σ)=2.3

Answered: Number of Jobs A sociologist found that…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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