Mean wear-out time of sixty hours with standard deviation

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A product has a mean wear-out time of sixty hours with a standard deviation of five hours.

1. What z value is used to calculate a .8413 probability of lasting? 2. What service life would have a .8413 probability of lasting? 3. What z value is used to calculate a .9772 probability of failure? 4. What service life would have a .9772 probability of failure? Show your work.

Reference no: EM131232409

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