1. A Department of Transportation report about air travel found that nationwide, 76% of all flights are on time. Base the following questions on 125 randomly selected flights. You may assume the only outcomes are that a flight is either late or is on time. (For all probabilities round to tenth of a percent )

a) How many flights would you expect to be late ?


b) Calculate the standard deviation ? (round to hundredths)


c) What is the probability you will have exactly 80 flights on time ?


d) What is the probability you will have 20 or less flights that are late ?


e) What is the probability you will have more than 100 on time ?