Exam 18: Management of Waiting Lines

The total cost curve

When the waiting cost incurred likely varies based on some customer characteristic, an appropriate queuing model is

The value of standardizing some or all of a service is demonstrated by the shorter wait times observed in models with

A single-channel queuing system has an average service time of 16 minutes per customer, which is exponentially distributed. The manager is thinking of converting to a system with a constant service time of 16 minutes. The arrival rate will remain the same. The effect will be to

An approach to reducing the variability in processing times might include greater standardization.

The queuing models discussed in the text apply only to steady-state conditions. Steady state exists only when customers arrive at a steady rate; that is, without any variability.

In an infinite-source model, the average number being served is equal to the ratio of the arrival rate to the service rate.

In a theme park like Disney world, reservation systems are a win-lose situation since only those holding reservations are satisfied.

A system has one service facility that can service 10 customers per hour. The customers arrive at a variable rate, which averages six per hour. Since there is excess capacity, no waiting lines will form.

The point that minimizes total queuing system costs is that point where waiting costs and capacity costs are equal.

A restaurant at a popular Colorado casino provides priority service to player's card holders. The restaurant has 10 tables or booths where customers may be seated. The service time (time a booth or table is occupied)averages 42 minutes once a party is seated. The customer arrival rate is 8 parties per hour, with the parties being equally divided between card holders and people without player's cards. What is the average time that player's card holders wait to be seated?

A multiple-channel system has customers arriving at an average rate of five per hour and an average service time of 40 minutes. The minimum number of servers for this system to be underloaded is

Each of the following is notation for a waiting-line model presented in the textbook except

A restaurant at a popular Colorado casino provides priority service to player's card holders. The restaurant has 10 tables or booths where customers may be seated. The service time (time a booth or table is occupied)averages 42 minutes once a party is seated. The customer arrival rate is 8 parties per hour, with the parties being equally divided between card holders and people without player's cards. On average, how many parties with player's cards are waiting to be seated?

Which of the following would tend to increase the difference between the actual time customers spent waiting and the perceived time spent waiting by those customers? (I)Lots of experience with the service on the part of customers(II)Anxiety on the part of customers(III)A pleasant physical environment for the customers

All infinite-source queuing models require the system utilization to be less than 1.0.

A bank of 10 machines requires regular periodic service. Machine running time and service time are both exponential. Machines run for an average of 44 minutes between service requirements, and service time averages six minutes per machine. If operators cost $15 per hour in wages and fringe benefits and machine downtime costs $75 per hour in lost production, what is the optimal number of operators for this bank of machines?

An alternative strategy to increase the capacity of a service system is

If a firm has reached the point at which further reducing waiting time is not economically feasible, reducing the ______________ is sometimes attractive.

The design of a service system often is used by management to _____________ the cost of capacity in relation to the expected cost of customers waiting.