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What percentage of washers is discarded

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Reference no: EM13703158

The mean inside diameter of a sample of 100 washers manufactured by a machine is 0.252 m, and the standard deviation is 0.003 m. The application for the washers permits a tolerance in the diameter of 0.246 m to 0.258 m. If the diameter is outside this tolerance, the washers are deemed defective and are sold as scrap. Assuming a normal distribution of washer diameters, (a) What percentage of washers is discarded? (b) If 1000 washers are manufactured each day, how many washers are discarded daily? (c) 20 washers have a combined mass of 1 kg. If the scrap dealer pays $0.65/kg, how much money is recovered per day from the sale of scrap washers?

Reference no: EM13703158

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