A recent Harris Poll on green behavior showed that 25% of adults often purchase used items instead of new ones. Consider a random sample of 75 adults. Let p be the sample proportion of adults who often purchase used instead of new items.
(A) What are the values of "Mhu p" & "Standard Deviation p" (site won't allow symbos)
(B) Is it appropriate to approximate the p distribution with a normal distribution ? Explain.