Find mean and the standard deviation of numbers record

Reference no: EM13147569

making auto parts - an automatic grinding machine in auto parts plant prepares axles wiht a target diameter fo 40.125 millimeters. The machine has some varability, so the standard deviation of the diamters is 0.002. A sample of 4 axles is inspected each hour for process control purposes, and records are kept of the sample mean diameter. What will be the mean and the standard deviation of the numbers record.

Reference no: EM13147569

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