A certain flight arrives on time 82 percent of the time. Suppose 112 flights are randomly selected. Use the normal approximation to the binomial to approximate the probability that

(a) exactly 92 flights are on time.

(b) at least 92 flights are on time.

(c) fewer than 89 flights are on time.

(d) between 89 and 99, inclusive are on time.

Pleas help me solve (a) thru (d)