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The life span of a calculator battery is noramllly distributed with a mean of 40 and a standard deviation of 6 hours. what is the

The life span of a calculator battery is noramllly distributed with a mean of 40 and a standard deviation of 6 hours. what is the probability that a battery lasts more than 48 hours?

question- The probability that a battery lasts more than 48 hours is ?

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