Question: A key joint in a precision machining process has a lower specification limit of a width of 5.70mm and an upper specification limit of 6.30mm.

A key joint in a precision machining process has
A key joint in a precision machining process has a lower specification limit of a width of 5.70mm and an upper specification limit of 6.30mm. The standard deviation is 0.005mm and the mean is 6mm. The company wants to reduce its defect probability and operate a "Six Sigma process." To what level would this company have to reduce the standard deviation in the process to meet this target? .000001 .00001 .05 10

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