Suppose That 25 Samples, Each of Size 200, We Selected $\sum \hat { p } _ { i }$

question 50

Multiple Choice

Suppose that 25 samples, each of size 200, we selected from what is believed to be an in-control process, and that $\sum \hat { p } _ { i }$ is the fraction of defective items in sample i. The 3-sigma control limits, LCL and UCL, of the p chart for the fraction of defective items are respectively

• A) .0236 and .244
• B) -.0462 and .0942
• C) 0 and .0564
• D) 0 and .0942
• E) -.0084 and .0564

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