Question: Determine the failure rate for a 90-hour test of 12 items where 2 items fail at 45 and 72 hours, respectively. W hat is

Determine the failure rate for a 90-hour test of 12 items where 2 items fail at 45 and 72 hours, respectively. W hat is the mean life of the product? 500 hours 275 hours 725 hours 375 hours

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