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Mathematics, 12.08.2019 21:30 jorell

Amanufacturer knows that their items have a normally distributed lifespan, with a mean of 14.2 years, and standard deviation of 3.8 years. if you randomly purchase one item, what is the probability it will last longer than 9 years?

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Amanufacturer knows that their items have a normally distributed lifespan, with a mean of 14.2 years...

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