6.66 The times of first failure of a unit of a brand of ink jet printers are...
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6.66 The times of first failure of a unit of a brand of ink jet printers are approximately normally distributed with a mean of 1,500 hours and a standard deviation of 200 hours.
a What fraction of these printers will fail before 1,000 hours?
b What should be the guarantee time for these printers if the manufacturer wants only 5% to fail within the guarantee period?
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Related Book For
Probability And Statistics For Engineers
ISBN: 9781133006909
5th Edition
Authors: Richard L Scheaffer, Madhuri Mulekar, James T McClave, Cecie Starr
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