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QUESTION
A manufacturer knows that their items have a normally distributed lifespan, with a mean of 7.2 years, and standard deviation of 0.6 years. if you randomly purchase one item, what is the probability it
A manufacturer knows that their items have a normally distributed lifespan, with a mean of 7.2 years, and standard deviation of 0.6 years. if you randomly purchase one item, what is the probability it will last longer than 9 years? round your answer to three decimal places.
