Exam 18: Management of Waiting Lines

According to Little's law, the number of people in line depends on the time of day that they arrive.

The optimal capacity is one that _____________ the sum of customer waiting costs and capacity or server costs.

In an infinite-source model, the system utilization is the ratio of the arrival rate to the service capacity.

Waiting lines occur even in underloaded systems because of variability in service rates and/or arrival rates.

A multiple-channel system assumes that each server will have its own waiting line, and line changing is not permitted.

The cost of customer waiting is easy to estimate, the number waiting multiplied by the wait cost per minute.

Compared to a single-channel system with exponential service time, a single-channel system with a constant service time causes a reduction of 50 percent in the average number waiting in line.

As the ratio of arrival rate to service rate is increased, which of the following is likely?

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 without player's cards are waiting to be seated?

Why is there waiting in an infinite-source queuing system?

Which one of the following measures of system performance is a key measure with respect to customer satisfaction?

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 parties without player's cards wait to be seated?

A customer growing frustrated with the wait and leaving the facility (without being served)is an example of

A bank is designing a new branch office and needs to determine how much driveway space to allow for cars waiting for drive-up teller service. The drive-up service will have three tellers and a single waiting line. At another branch of the bank in a similar setting, the average service time for drive-up tellers is four minutes per customer, and average arrival rate is 36 customers per hour. It is expected that the new bank will have similar characteristics. How many spaces should be provided to have a 96 percent probability of accommodating all of the waiting cars?

Although it is generally the case that service systems have enough capacity, waiting lines result when __________ exceeds capacity for periods of time.

A single-channel queuing system has an average service time of eight minutes and an average time between arrivals of 10 minutes. The arrival rate is

The most commonly used queuing models assume that the arrival rate can be described by a Poisson distribution.

A dental office with two professionals (one dentist, one hygienist)who work together as a team would be an example of a multiple-channel system.

The goal of waiting-line management is to eliminate customer waiting lines.

A single-phase queuing system is one which has a single