How would you use the control chart

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Reference no: EM131909802

Question: Widgets are made in a two-shift operation. Management is wondering if there is any difference in the proportion of defectives produced by these two shifts.

a. How would you use the p control chart to determine if there is a difference between the two shifts? Explain.

b. On the first shift, samples of 200 units have been used and p = .06. Calculate CL, UCL, LCL for the first shift.

c. On the second shift, six samples of 200 units have been taken with the proportion of defectives .04, .06, .10, .02, .05, and .03. Using the samples from the second shift, has the process mean shifted upward or downward? Explain.

Reference no: EM131909802

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