February 25, 2017

Homework Help: Statistics

Posted by Andy on Friday, April 12, 2013 at 5:56am.

The lifetime of computer chips is approximately normal with mean 1.4×106 hours and standard deviation 3×105 hours. The statistics department has 5 computers built with that chip as the main component. What is the probability that all 5 computers last longer than 1.8×106 hours?

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