The life span of a battery is normally distributed with a

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The life span of a battery is normally distributed with a mean of 2500 hours and at percent of batteries have a life standard deviation of 50 hours. What percent of batteries have a life span that is more than 2560 hours? Would it be unusual for a battery to have a life span that is more than 2560 hours? Explain your reasoning.

Reference no: EM13382381

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