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Reconider the chemical process yield data from lin sa Rocan that ơ 3, yield is normally distributed and that. 5 observaiana on yield art 91.0%, 88.75%, 90.8%, 8995%, and 91.3% Upea 005. (x) Isthem evidence that the mtun yield įs not 90%? (b) What is tbe P-vaus for this est? l sample aine would be required to detect a true mean yield or 85% with probability 0.957
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6 2 90.48-90一ー0.3578 (29 90, 48-8S 仁0,025

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