The manager of a grocery store has selected a random sample of 100 customers. The vege length of time it k these 100 customers to check out was 30 minutes. It is known that the standard deviation of the checkst time is minute With a 90 probability, the sample mean will provide a margin of error of 0.3645 10 .196 1.96

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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The manager of a grocery store has selected a random sample of 100 customers. The average length of time
these 100 customers to check out was 30 minutes. It is known that the mandand deviation of the checkest time is 1
minute
With a 90 probability, the sample mean will provide a margin of error of
1645
10
196
1.96
Transcribed Image Text:The manager of a grocery store has selected a random sample of 100 customers. The average length of time these 100 customers to check out was 30 minutes. It is known that the mandand deviation of the checkest time is 1 minute With a 90 probability, the sample mean will provide a margin of error of 1645 10 196 1.96
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