According to an​ airline, flights on a certain route are on time 80% of the time. Suppose 24 flights are randomly selected and the number of​ on-time flights is recorded. ​(a) Explain why this is a binomial experiment. ​(b) Find and interpret the probability that exactly 15 flights are on time. ​(c) Find and interpret the probability that fewer than 15 flights are on time. ​(d) Find and interpret the probability that at least 15 flights are on time. ​(e) Find and interpret the probability that between 13 and 15 ​flights, inclusive, are on time.