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The following data are the number of defects found in the assembly of a sample of 500 parts at a time: 106, 116, 164, 89, 99, 40, 110, 36, 69, 74, 42, 37, 25, 88, 101, 64, 51, 74, 71, 43, 80 a) What control chart should be used b) From (a) find the control limits and the center line. c) Process in control? If not, find new control limits, assuming that assignable causes are eliminated.