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

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