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The life span of a battery is normally​ distributed, with a mean of 2400 hours and...

The life span of a battery is normally​ distributed, with a mean of 2400 hours and a standard deviation of 50 hours. What percent of batteries have a life span that is more than 2460 ​hours? Would it be unusual for a battery to have a life span that is more than 2460 ​hours? Explain your reasoning.

What percent of batteries have a life span that is more than 2460 ​hours?

Approximately_______% of batteries have a life span that is more than 2460 hours.

Math   Statistics-And-Probability   
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