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4 Score: 2/25 1/6 answered Question 4 score: '1/6 answered Question 4 A manufacturer knows that their items have a normally distributed lifespan, with a
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score: '1/6 answered Question 4 A manufacturer knows that their items have a normally distributed lifespan, with a mean of 4 years, and standard deviation of 0.5 years. If you randomly purchase one item, what is the probability it will last longer than 4 years?
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