An airline charges the following baggage fees: $25 for the first bag and $35 for the second. Suppose 54% of passengers have no checked luggage, 33% have one piece of checked luggage and 13% have two pieces. We suppose a negligible portion of people check more than two bags. (a) Build a probability model. (Round your answers to two decimal places.) Event X'PKX) (If-00.)! (xEmF-Pm $lo lv $l0 Ix $: $|a_5 ix $l212_5 |x $:] $l4-2 lx $l147 Ix $[:l Compute the average revenue per passenger, and compute the corresponding standard deviation. (Round your answers to the nearest cent.) average revenue :1; :] standard deviation 1; :] No baggage 1 checked bag 2 checked bags (b) About how much revenue should the airline expect for a flight of 140 passengers? With what standard deviation? (Round your answers to the nearest cent.) expected revenue 1; :] standard deviation 1; :] Note any assumptions you make and if you think they are justied. We assume the number of checked bags of any given passenger is independent v of the number of checked bags of any other passenger. This assumption is probably v