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Exam 10: Waiting Line Analysis and Simulation

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Question 21

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The central problem in virtually every waiting line situation is a decision balancing the costs of adding services with the costs of waiting.

A) True
B) False

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Question 22

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An infinite population in waiting line management refers to a population that is large enough in relation to the service system so that the change in population size caused by subtractions or additions to the population does not significantly affect the system probabilities.

A) True
B) False

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Question 23

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Gas stations, loading docks, and parking lots have infinite potential length of lines for their respective queuing systems.

Which of the following is a suggestion for managing queues that is mentioned in the textbook?

Which of the following is a suggestion for managing queues that is mentioned in the textbook?

Machine breakdown and repair in a 12-machine factory having one repair mechanic would develop which type of queuing system line structure concerning machine breakdowns?

Longest waiting time in line is a queue discipline discussed in the textbook.

Best customer last is a queue discipline discussed in the textbook.

A tellers' window in a bank is an example of a single-channel, multiphase queuing system.

Assume the service rate for a queue in a truck-loading operation is 2 trucks per hour.Using the infinite queuing notion for the models presented in the textbook, which of the following is the average service time?

In a department 25 machines are kept running by three operators who respond to randomly occurring equipment problems.

Which of the following are the three major components of a queuing system?

The admissions system in a hospital for patients is an example of a single-channel, single-phase queuing system.

Assuming a 24 hour operation in a warehouse, and an arrival following Poisson distribution with mean rate of 36 per day and service (unloading using a single bay) following exponential distribution with a rate of 48 trucks per day, answer the following question.What is the expected waiting time in the system (in hours) for a typical truck?

The term "queue discipline" involves the art of controlling surly and unruly customers who have become irritated by waiting.

Which of the following is not a queue discipline discussed in the textbook?

A car wash is an example of a single-channel, multiphase queuing system.

Being able to permit interactive debugging of a model so the user can trace flows through the model and more easily find errors is considered a desirable feature of simulation software systems.

In a practical sense, a finite population is one that potentially would form a very long line in relation to the capacity of the serving system.

A company is concerned about the number of customers who have to wait for service in its customer service department.Assume the rate at which customers are serviced is 12 per hour.Using the infinite queuing notion for the models presented in the textbook, which of the following is the mean time between arrivals?