Question: (20 points) 14.6 The specification for a shaft diameter is 2122mm. Provided below are 30 recorded observations for the diameter of a shaft (in mm)

(20 points) 14.6 The specification for a shaft diameter is 2122mm. Provided below are 30 recorded observations for the diameter of a shaft (in mm) taken at 30 different points in time. (a) Develop X and three sample MR charts and determine control limits from the data. (b) Determine from the control charts whether the process is under control or not. (c) Determine the capability indices (Cp and CPk) for the process. (d) Determine the percent defective shafts produced by the process

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