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Using z score what is the value =P(z>2.6875) A manufacturer knows that their items have a normally distributed lifespan, with a mean of 8.3 years,

Using z score what is the value =P(z>2.6875)

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A manufacturer knows that their items have a normally distributed lifespan, with a mean of 8.3 years, and standard deviation of 1.6 years. If you randomly purchase one item, what is the probability it will last longer than 4 years? 2.6875 X

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