The daily demand appears to follow a normal distribution; however, it has been observed that midsize-car customers do not choose to rent a compact when no midsize car is available. The discount rate is available to persons who are willing to reserve a car at least 14 days in advance and agree to pick up that car within 2 hours after their flight arrives. Otherwise, a nonrefundable deposit against their credit card will be forfeited. The current reservation policy is that 40 compact cars are held for customers who are willing to pay the full rate and 25 midsize cars are held for full rate–paying customers.