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The airline knows that in the long run, only 90% of passengers who book a seat...

The airline knows that in the long run, only 90% of passengers who book a seat show up for their flight. On a flight with 300 seats, there are 324 reservations. (a) Assuming passengers make independent decisions what is the chance that the flight will be overbooked? (b) Redo (i) assuming passengers travel in pairs and each pair flips a coin with probability 0.9 of heads to see if they will both show up or both stay home.
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