n average of 40 cars per hour (inter-arrival times are exponentially distributed) are temptedto use the drive-in window at the Hot Dog King Restaurant. If a total of more than 4 carsare in line (including the car at the window) a car will not enter the line. It takes an averageof 4 minutes (exponentially distributed) to serve a car.(1) What is the average number of cars waiting for th