Operations Management: Sustainability and Supply Chain Management, Twelfth Edition

Self Test

• Before taking the self-test, refer to the learning objectives listed at the beginning of the module and the key terms listed at the end of the module.

1. LO D.1 Which of the following is not a key operating characteristic for a queuing system?

   1. Utilization rate

   2. Percent idle time

   3. Average time spent waiting in the system and in the queue

   4. Average number of customers in the system and in the queue

   5. Average number of customers who renege

2. LO D.2 Customers enter the waiting line at a cafeteria’s only cash register on a first-come, first-served basis. The arrival rate follows a Poisson distribution, while service times follow an exponential distribution. If the average number of arrivals is 6 per minute and the average service rate of a single ...