Exercise 3An employment counselor found that in a sample of 100 unemployed workers, 65% were notinterested in returning to work. Find the 95% confidence interval of the true proportion ofworkers who do not wish to return to work.Exercise 4The sugar content (in grams) for a random sample of 4-ounce containers of applesauce isshown below. Find the 99% confidence interval for (a) the population variance and standarddeviation and (b) the population mean. Assume the variable is normally distributed.18.619.520.220.419.321.020.319.620.718.922.119.720.818.920.721.619.520.120.319.9 NAME:Calculator Homework #7 – Confidence IntervalsUse the calculator to determine the confidence intervals for the following.Exercise 1A random sample of 49 shoppers showed that they spend an average of $23.45 per visit atBarnes and Nobles Book store. The standard deviation of the population is $2.80. Find the 90%confidence interval of the true mean.Exercise 2The daily salaries of substitute teachers for 8 local school districts are shown below. Find the95% confidence interval for the mean of the salaries.$60$56$60$55$70$55$60$55

Given that : 1) sample size = 49 Mean = $ 23.45 S. D = $ 2.80 90% confidence interval.

Answered: Exercise 3 An employment counselor…

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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Exercise 3 An employment counselor found that in a sample of 100 unemployed workers, 65% were not interested in returning to work. Find the 95% confidence interval of the true proportion of workers who do not wish to return to work.