Burger Dome analyzed data on customer arrivals and concluded that the arrival rate is $31$ customers per hour. Burger Dome also studied the order$-$filling process and found that a single employee can process an average of $43$ customer orders per hour. Burger Dome is concerned that the methods currently used to serve customers are resulting in excessive waiting times and a possible loss of sales. Management wants to conduct a waiting line study to help determine the best approach to reduce waiting times and improve service.