excercise 16-10

a. Determine the sample size necessary to estimate the probability that a flipped penny lands heads to within a margin-of-error of .02 with confidence level 95%. [Hint: Use your estimate of this probability from part a in the previous exercise.]

b. How would you expect this sample size to change if you increased the confidence level to 99%? Explain.

c. Perform the sample size calculation requested in part b, and see whether your prediction was right.

d. How would you expect this sample size to change if you also adjusted the margin-of-error to .01 with 99% confidence? Explain.

e. Perform the sample size calculation requested in part d, and see whether your prediction was right.