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A survey is planned to determine the mean annual family medical expenses of employees of a large company The management of the company wishes to be 90% confident that the sample mean is correct to within $40 of the population mean annual family medical expenses A previous study indicates that the standard deviation is approximately $322 a. How large a sample is necessary? b. If management wants to be correct to within $15, how many employees need to be selected? Click here to view page 1 of the cumulative standardized normal distribution table. Click here to view page 2 of the cumulative standardized normal distribution table. a. How large a sample is necessary? n (Round up to the nearest Integer) b. If management wants to be correct to within +$15, how many employees need to be selected? n (Round up to the nearest integer)

A survey is planned to determine the mean annual family medical expenses of employees of a large company The management of the company wishes to be 90% confident that the sample mean is correct to within $40 of the population mean annual family medical expenses A previous study indicates that the standard deviation is approximately $322 a. How large a sample is necessary? b. If management wants to be correct to within $15, how many employees need to be selected? Click here to view page 1 of the cumulative standardized normal distribution table. Click here to view page 2 of the cumulative standardized normal distribution table. a. How large a sample is necessary? n (Round up to the nearest Integer) b. If management wants to be correct to within +$15, how many employees need to be selected? n (Round up to the nearest integer)

MATLAB: An Introduction with Applications
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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A survey is planned to determine the mean annual family medical expenses of employees of a large company. The management of the company wishes to be 90% confident that the sample mean is correct to within +$40 of the population mean annual family medical expenses A previous study indicates that the standard deviation is approximately $322 a. How large a sample is necessary? b. If management wants to be correct to within +$15, how many employees need to be selected? Click here to view page 1 of the cumulative standardized normal distribution table. Click here to view page 2 of the cumulative standardized normal distribution table. a. How large a sample is necessary? (Round up to the nearest integer.) b. If management wants to be correct to within +$15, how many employees need to be selected? (Round up to the nearest integer) n= n= Submit quiz
Transcribed Image Text:A survey is planned to determine the mean annual family medical expenses of employees of a large company. The management of the company wishes to be 90% confident that the sample mean is correct to within +$40 of the population mean annual family medical expenses A previous study indicates that the standard deviation is approximately $322 a. How large a sample is necessary? b. If management wants to be correct to within +$15, how many employees need to be selected? Click here to view page 1 of the cumulative standardized normal distribution table. Click here to view page 2 of the cumulative standardized normal distribution table. a. How large a sample is necessary? (Round up to the nearest integer.) b. If management wants to be correct to within +$15, how many employees need to be selected? (Round up to the nearest integer) n= n= Submit quiz
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