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A chemical process plant keeps the yield of their product everyday. They measure the yield for a period of 31 days. The calculated sample mean

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A chemical process plant keeps the yield of their product everyday. They measure the yield for a period of 31 days. The calculated sample mean x-bar= 45.24 and sample variance is 25. Assume a 95% condence. A. Find 2%: B. Find the two-sided condence interval on the true mean: EMS

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