The plant manager believes that the operators take a lunch break for more than 60 minutes. A sample of 15 operators from a normal population were randomly selected, and it was found out that their mean lunch break is 60 minutes with a standard deviation of 5 minutes. At 0.05 level of significance, is the mean lunch break greater than 60 minutes?

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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The plant manager believes that the
operators take a lunch break for more than
60 minutes. A sample of 15 operators
from a normal population were randomly
selected, and it was found out that their
mean lunch break is 60 minutes with a
standard deviation of 5 minutes. At 0.05
level of significance, is the mean lunch
break greater than 60 minutes?
Transcribed Image Text:* The plant manager believes that the operators take a lunch break for more than 60 minutes. A sample of 15 operators from a normal population were randomly selected, and it was found out that their mean lunch break is 60 minutes with a standard deviation of 5 minutes. At 0.05 level of significance, is the mean lunch break greater than 60 minutes?
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