On-Time Flights Recently, American Airlines had 72.3% of its flights arriving on time (based on data from the U.S. Department of Transportation). In a check of 40 randomly selected American Airlines flights, 19 arrived on time. Estimate the probability of getting 19 or fewer on-time flights among 40, assuming that the 72.3% rate is correct. Is it unusual to get 19 or fewer on-time flights among 40 randomly selected American Airlines flights?