An airline charges the following baggage fees: $20 for the first bag and $40 for the second. Suppose 54% of passengers have no checked luggage, 25% have only one piece of checked luggage and 21% have two pieces. We suppose a negligible portion of people check more than two bags. a) The average baggage-related revenue per passenger is: $___.
b) The standard deviation of baggage-related revenue is: $.
c) About how much revenue should the airline expect for a flight of 120 passengers?