Mathematics, 31.08.2021 22:10 mariaaking8930
The life of a particular type of battery is normally distributed with a mean of 30 hours and a standard deviation of 4 hours. The managers of the firm want to offer customers a free battery if the purchased battery lasts for less than X hours, but they want to set X such that 96 percent of batteries will last longer than X hours. What level should they set for X
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