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Please help and show workings. Thank you. A manufacturer knows that their items have a normally distributed lifespan, with a mean of 7.3 years, and

Please help and show workings. Thank you.

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A manufacturer knows that their items have a normally distributed lifespan, with a mean of 7.3 years, and standard deviation of 1.5 years. The 6% of itenis with the shortest lifespan will last less than how many years? Give your answer to one decimal place. Submit

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