A sample of 400 high-reliability switches was placed on a life test until the first five failures
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A sample of 400 high-reliability switches was placed on a life test until the first five failures occurred and the test was then terminated. The first five failures were at 268, 395, 479, 685 and 964 hours. Find a 99% lower confidence limit for the mean life of the switches assuming an exponential model.
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Related Book For 
Probability And Statistics For Engineers
ISBN: 9780134435688
9th Global Edition
Authors: Richard Johnson, Irwin Miller, John Freund
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