28. Ready, Set, Relax In a recent survey of American workers, approximately 60% said their employer pressured them to work overtime.12 Assume that the 60%

figure is correct and that a random sample of n525 Americans is selected.

a. Use Table 1 in Appendix I to find the probability that more than 20 felt pressure to work overtime.

b. Use the normal approximation to the binomial distribution to approximate the probability in part

a. Compare your answer with the exact value from part a.