For the Boston to Chicago route, an airline flies a Boeing 737–800 with 170 seats. Based on past experience, the airline finds that people who purchase a ticket for this flight have 0.80 probability of showing up for the flight. They routinely sell 190 tickets for the flight, claiming it is unlikely that more than 170 people show up to fly.
a. Provide statistical reasoning they could use for this decision.
b. Describe a situation in which the assumptions on which their reasoning is based may not be satisfied.