Question

Which of the cost estimates and performance measures are not used for economic analysis of a queuing system?

• A. Cost per server per unit of time
• B. Average waiting time of customers in the system
• C. Cost per unit time for a customer waiting in the system
• D. The average number of customers in the system

Hint:

To optimize a queue's cost, remember the balancing scale formula: \[ \text{Total Cost} = (\text{Server Cost} \times \text{Servers}) + (\text{Waiting Cost Rate} \times \text{Number of Customers}) \] This makes it clear that the *number of customers* ($L_s$) is used to compute costs, rather than the *waiting time duration* ($W_s$).

Answer 1

The Correct Option is B