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abidahaziz
Oct 24, 2011, 03:12 AM
A company that manufactures oil seals found the population mean to be 49.15mm,the population standard deviation to be 0.51mm and the data to be normally distributed. If the internal diameter of the seal below the lower specification limit of 47.80mm, the part is reworked. If it is above the upper specification limit of 49.80mm,the seal is scrapped. What percentage of the seal reworked?