An airline offers two fare classes for coach seats on a particular flight: full-fare class at $440/ticket and economy class at $218/ticket. There are 230 coach seats on the aircraft. Demand for full-fare seats has a mean of 43, a standard deviation of 8, and the fol- lowing empirical distribution: Economy-class customers must buy their tickets three weeks in advance, and these tickets are ex- pected to sell out. a)Find the (i) protection level and (ii) booking limit for low-fare seats.