The City Bank of Durham has recently begun a new credit program. Customers meeting certain credit requirements can obtain a credit card accepted by participating area merchants that carries a discount. Past numbers show that 25 percent of all applicants for this card are rejected. Given that credit acceptance or rejection is a Bernoulli process, out of 15 applicants, what is the probability that

(a) Exactly four will be rejected?

(b) exactly right?

(c) Fewer than three?

(d) more than five?