The following is an airport queue case study: Please answer the following in green from the information given in the green boxes:

Attendants at the service counters must be able to serve passengers at a higher rate than the arrival rate of those passengers. At some times there are many departing and arriving flights, while at other times there are few flights. The challenge: To determine how many service counters to keep open. ' BUSY PERIOD #1 BUSY PERIOD #2 Early morning Early evening (approx. 6:30-9:00am) (approx. 6:00-8:00pm) Many departing Many departing domestic flights international flights AVERAGE TIME BETEEN CONSECUTIVE CUSTOMER ARRIVALS Approx. 4 minutes for both the morning and evening Approx. 6 minutes in the middle of the day AVERAGE SERVICE TIME Approx. 8 minutes in the morning Approx. 15 minutes in the evening Approx. 6 minutes in the middle of the day With multiple service counters, customers can be routed through a single line or dedicated lines for each counter. You must ensure that customers are not waiting very long and that you're not wasting resources on open counters. How many counters do you need open (for each of the three time periods) so that customer wait time is not excessive? ODuring each period: What is the number of counters that need to be open? What is the average number of customers in queue and the average waiting time for a customer in the queue before being serviced for check-in? When you need multiple counters open: Do you have one queue for all counters? Do you have dedicated queues for each counter? What else is being overlooked in the above scenario and your analysis? How do you ensure that customers are not waiting in line too long before being checkedin? How do you ensure that you don't have too many counters open with no customers at these counters