The mean life time of a sample of 400 fluoroscent light bulbs produced by a company is found to be 1,570 hours with a standard deviation of 150 hours. Test the hypothesis that the mean life time of the bulbs produced by the company is 1600 hours against the alternative hypothesis that it is greater than 1,600 hours at 1% level of significance.

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 mean life time of a sample of 400 fluoroscent light bulbs produced by
a company is found to be 1,570 hours with a standard deviation of 150 hours. Test the
hypothesis that the mean life time of the bulbs produced by the company is 1600 hours
against the alternative hypothesis that it is greater than 1,600 hours at 1% level of
significance.
Transcribed Image Text:The mean life time of a sample of 400 fluoroscent light bulbs produced by a company is found to be 1,570 hours with a standard deviation of 150 hours. Test the hypothesis that the mean life time of the bulbs produced by the company is 1600 hours against the alternative hypothesis that it is greater than 1,600 hours at 1% level of significance.
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