(a) A control chart for the number nonconforming is to be established, based on samples of size 400. To start the control chart, thirty samples were selected and the number nonconforming in each...

(a) A control chart for the number nonconforming is to be established, based on samples of size 400. To start the control chart, thirty samples were selected and the number nonconforming in each sample determined, yieldingWhat are the parameters of thenpchart?

(b) Suppose the process average fraction nonconforming shifted to 0.15. What is the probability that the shift would be detected on the first subsequent sample?