4. A sociologist discovered that an average of 7.2 jobs was held by 50 retired men duringthe course of their lives. The standard deviation of the populationis 2.1. Calculate the95% confidence interval for the average number of jobs.

Sample mean x̄=7.2,n=sample size=50, population standard deviations σ=2.1 Construct 95% CI for…

Answered: 4. A sociologist discovered that an…

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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4. A sociologist discovered that an average of 7.2 jobs was held by 50 retired men during the course of their lives. The standard deviation of the population is 2.1. Calculate the 95% confidence interval for the average number of jobs.