question_answer Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 9.6…A: Let X denote the items lifespan and it follows normal distribution with a mean of μ=9.6 years, and…

question_answer Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 9.6…A: Let X denote the items lifespan and it follows normal distribution with a mean of μ=9.6 years, and…

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