A large retail toy store finds that, on average, a certain cheap (under $20) electronic toy has a 5 percent damage rate during shipping. From each incoming shipment, a sample of 100 is inspected.
(a) Find the control limits for a p chart.
(b) Plot the 10 samples below on the p chart. Is the process in control?
(c) Is the sample size large enough to assume normality of the sample proportion? Explain.

Transcribed Image Text:

Sample XIn 100 100 100 100 100 100 100 100 100 100 0.03 0.05 0.04 0.07 0.02 0.02 0.00 0.02 0.07 0.06 10