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an automatic grinding machine in an auto parts plant prepares axles with a target diameter

an automatic grinding machine in an auto parts plant prepares axles with a target diameter

Jun 11 2015 · Making auto parts An automatic grinding machine in an auto parts plant prepares axles with a target diameter 40 125 millimeters mm The machine has some variability so the standard deviation of the diameters is 0 002 mm A sample of 4 axles is inspected each hour for process control purposes and records are kept of the sample mean diameter

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