The analyst conducting the Rogers survey in For Example: “Sampling distribution for
proportions of telecommunications customers” says that, unfortunately, only 20 of the
customers he tried to contact actually responded, but that of those 20, 8 are package
subscribers.
QUESTIONS
1. If the proportion of package subscribers in his region is 0.30, how many package
subscribers, on average, would you expect in a sample of 20?
2. Would you expect the shape of the sampling distribution of the proportion to be
Normal? Explain.