A certain flight arrives on time82percent of the time. Suppose112flights are randomly selected. Use the normal approximation to the binomial to approximate the probability that

(a) exactly92flights are on time.

(b) at least92flights are on time.

(c) fewer than89flights are on time.

(d) between89and99, inclusive are on time.

Can you explain to me how I solve (a) thru (d) I keep getting the wrong answer don't know what I am doing wrong.