A manufacturer knows that their items have a normally distributed lifespan, with a mean of 8 years, and standard deviati

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answerhappygod
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A manufacturer knows that their items have a normally distributed lifespan, with a mean of 8 years, and standard deviati

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A manufacturer knows that their items have a normallydistributed lifespan, with a mean of 8 years, and standarddeviation of 2.3 years. If you randomly purchase one item, what isthe probability it will last longer than 11 years?
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