Exam 18: Waiting Line Models

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Consider a single-line, single-server waiting line system. The arrival rate λ is 80 people per hour, and the service rate μ is 120 people per hour. What is the probability of having 3 or more units in the system?

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_________ _________ are used to gain useful information about waiting line systems.

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Waiting line models typically assume what distribution(s)?

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A short waiting line may result from all of the following except:

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Which of the following is least likely to be considered an infinite customer population?

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For a single-line, multi-server, single-phase waiting line system, where represents the mean arrival rate of customers and represents the mean service rate for each of s identical servers, what is the formula for the average utilization of the system?

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A customer population is called _______________ when the number of potential new customers is not affected by the number of customers already in the system.

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Discrete-event simulation of products allows the customer to define the system, arrival, and service patterns.

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For a single-server, single-line, single-phase waiting line system, where represents the mean arrival rate of customers and represents the mean service rate, what is the formula for the average time spent waiting in line?

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What are the two elements that define a waiting line system?

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In waiting line terminology, what is another name for server?

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Visitors to a major amusement park would be considered a finite customer population.

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In a multi-server system, you must first verify that su > λ.

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Which of the following waiting line systems best describes a grocery store, where each register has its own line and server?

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Changing the demand pattern by offering off-peak discounts represents an effective way to try to manage long waiting lines.

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Which of the following is least likely to be considered a finite customer population?

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What are the five characteristics that define a service system?

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A single-line service system eliminates jockeying behavior.

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Consider a single-line, single-server waiting line system. Suppose that customers arrive according to a Poisson distribution at an average rate of 100 per hour. The manager does not want customers to be in the system for longer than 12 minutes. How fast does the average (exponentially distributed)service time need to be in minutes in order to keep the manager satisfied?

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Customers generally consider which of the following priority rules to be the fairest?

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