A large study done by researchers at the New Jersey School of Medicine reports that 10% of the eyes that undergo LASIK corrective surgery need to be retreated. A nearby clinic performed LASIK surgery on 15 patients (30 eyes) last week. Assuming that all the binomial conditions are met, use the binomial table to deter-mine the probability that

a. One eye in this group of 30 needs retreatment.

b. At least three eyes need retreatment.

c. No more than four eyes need retreatment.

d. Between two and five eyes (inclusive) need retreatment.