An insurance company is trying to estimate the average number of sick days that full-time food-service workers use per year. How large a sample must be selected if the company wants to be 99% confident of getting an interval that has a margin of error of 1.5 days? Assume that a previous study found the number of sick days follows a normal distribution with population standard deviation of 5.5 days.
An insurance company is trying to estimate the average number of sick days that full-time food-service workers use per year. How large a sample must be selected if the company wants to be 99% confident of getting an interval that has a margin of error of 1.5 days? Assume that a previous study found the number of sick days follows a normal distribution with population standard deviation of 5.5 days.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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(Q3). An insurance company is trying to estimate the average number of sick days that full-time food-service workers use per year. How large a sample must be selected if the company wants to be 99% confident of getting an interval that has a margin of error of 1.5 days? Assume that a previous study found the number of sick days follows a
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