(Using Excel)

Because many passengers who make reservations do not show up, airlines often overbook flights (sell more tickets than there are seats). A certain airplane holds 178 passengers. If the airline believes the rate of passenger no-shows is 8 % and sells 194 tickets, is it likely they will not have enough seats and someone will get bumped?

a. Use the normal model to approximate the binomial to determine the probability of at least 179 passengers showing up.

b. Should the airline change the number of tickets they sell for this flight? Explain.