Exam 12: Queues and Process Simulation Modeling

In queuing systems,some customers may arrive at the system,determine that the line is too long,and decide not to join the queue.This kind of behavior is called ________.

(Multiple Choice)

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Question 21

What is the fraction of time that the work station was waiting to pass a customer on to the next element?

(Multiple Choice)

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Question 22

Use the scenario given below to answer the following question(s). You arrive at a queue and spend 10 minutes in the system (waiting plus service).During this time,customers arrive at the rate of 15 per minute.The mean service rate is 20 per minute. -Assuming Little's law,determine the number of customers that remain in the system when you leave.

(Multiple Choice)

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Question 23

Use the scenario given below to answer the following question. Consider the flow process map given below.Assume that orders enter the system with a time between arrivals that is exponentially distributed with a mean of 0.8 minutes.The processing time at work station 1 is exponential with a mean of 0.50 minutes,and at work station 2,it is exponential with a mean of 1 minute.The queue for work station 1 has a capacity of 6,while the queue for work station 2 has a capacity of 4. Run the simulations for 30 replications of a 24-hour. -The number of work cycles started in work station 1 is ________.

(Multiple Choice)

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Question 24

If the average waiting time for a customer in a queue is 25 minutes and the customer service rate is 5 customers per minute,calculate the average time a customer spends in the system.

(Multiple Choice)

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Question 25

The lines and waiting times for a service initially grow longer,but level off eventually.This is called the transient period.

(True/False)

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Question 26

Use the data below to answer the following question(s). Given: λ = customer arrival rate; μ = customer service rate; L = number of customers in the system; L_q = number of customers in the queue. -The formula to calculate L_q in an FCFS system,L_q = ,is not valid if μ < λ.

(True/False)

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Question 27

Identify the formula that is used to determine the probability that the system is empty (P₀).

(Multiple Choice)

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Question 28

Use the scenario given below to answer the following question. Consider the flow process map given below.Assume that orders enter the system with a time between arrivals that is exponentially distributed with a mean of 0.8 minutes.The processing time at work station 1 is exponential with a mean of 0.50 minutes,and at work station 2,it is exponential with a mean of 1 minute.The queue for work station 1 has a capacity of 6,while the queue for work station 2 has a capacity of 4. Run the simulations for 30 replications of a 24-hour. $Use the scenario given below to answer the following question. Consider the flow process map given below.Assume that orders enter the system with a time between arrivals that is exponentially distributed with a mean of 0.8 minutes.The processing time at work station 1 is exponential with a mean of 0.50 minutes,and at work station 2,it is exponential with a mean of 1 minute.The queue for work station 1 has a capacity of 6,while the queue for work station 2 has a capacity of 4. Run the simulations for 30 replications of a 24-hour. -What is the fraction time blocked for work station 2?$ -What is the fraction time blocked for work station 2?

(Multiple Choice)

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Question 29

Determine the probability that the system is empty.

(Multiple Choice)

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Question 30

Based on the simulation results,what is the average number of customers in the queue?

(Multiple Choice)

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Question 31

Use the data given below to answer the following question(s). Customers arrive at an airline ticket counter at the rate of three customers per minute and can be served at the rate of 4 customers per minute. -Explain Little's law used in queuing systems.

(Essay)

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Question 32

The inventory level that triggers an order is called the ________.

(Multiple Choice)

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Question 33

If the average arrival rate increases to 13,the average number of customers in the system ________.

(Multiple Choice)

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Question 34

Use the scenario given below to answer the following question. Consider the flow process map given below.Assume that orders enter the system with a time between arrivals that is exponentially distributed with a mean of 0.8 minutes.The processing time at work station 1 is exponential with a mean of 0.50 minutes,and at work station 2,it is exponential with a mean of 1 minute.The queue for work station 1 has a capacity of 6,while the queue for work station 2 has a capacity of 4. Run the simulations for 30 replications of a 24-hour. -Determine the average number of customers in queue 2.

(Multiple Choice)

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Question 35

According to the Poisson process,if the mean arrival rate is 2 customers per minute,the mean interval time is 4 minutes.

(True/False)

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Question 36

Use the case given below to answer the following question(s). Reuben went to a diner to have a hamburger and French fries.The person at the cash counter assigned the number 27 to Reuben and told him he would have to wait for his turn. -Which of the following is an example of balking?

(Multiple Choice)

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Question 37

Use the scenario given below to answer the following question. Consider the flow process map given below.Assume that orders enter the system with a time between arrivals that is exponentially distributed with a mean of 0.8 minutes.The processing time at work station 1 is exponential with a mean of 0.50 minutes,and at work station 2,it is exponential with a mean of 1 minute.The queue for work station 1 has a capacity of 6,while the queue for work station 2 has a capacity of 4. Run the simulations for 30 replications of a 24-hour. -Determine the average time a customer spends in queue 2.

(Multiple Choice)

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Question 38

What is the probability that the system is empty?

(Multiple Choice)

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Question 39

Typically,the first step in process simulation is to ________.

(Multiple Choice)

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Question 40

Showing 21 - 40 of 97

In queuing systems,some customers may arrive at the system,determine that the line is too long,and decide not to join the queue.This kind of behavior is called ________.

What is the fraction of time that the work station was waiting to pass a customer on to the next element?

If the average waiting time for a customer in a queue is 25 minutes and the customer service rate is 5 customers per minute,calculate the average time a customer spends in the system.

The lines and waiting times for a service initially grow longer,but level off eventually.This is called the transient period.

Use the data below to answer the following question(s). Given: λ = customer arrival rate; μ = customer service rate; L = number of customers in the system; L_q = number of customers in the queue. -The formula to calculate L_q in an FCFS system,L_q = ,is not valid if μ < λ.

Identify the formula that is used to determine the probability that the system is empty (P₀).

Determine the probability that the system is empty.

Based on the simulation results,what is the average number of customers in the queue?

Use the data given below to answer the following question(s). Customers arrive at an airline ticket counter at the rate of three customers per minute and can be served at the rate of 4 customers per minute. -Explain Little's law used in queuing systems.

The inventory level that triggers an order is called the ________.

If the average arrival rate increases to 13,the average number of customers in the system ________.

According to the Poisson process,if the mean arrival rate is 2 customers per minute,the mean interval time is 4 minutes.

Use the case given below to answer the following question(s). Reuben went to a diner to have a hamburger and French fries.The person at the cash counter assigned the number 27 to Reuben and told him he would have to wait for his turn. -Which of the following is an example of balking?

What is the probability that the system is empty?

Typically,the first step in process simulation is to ________.

Data and Business Decisions

Descriptive Statistics and Data Analysis

Probability Concepts and Distributions

Sampling and Estimation

Hypothesis Testing and Statistical Inference

Regression Analysis

Forecasting

Introduction to Statistical Quality Control

Building and Using Decision Models

Decision Models With Uncertainty and Risk

Decisions, uncertainty, and Risk

Linear Optimization

Integer, nonlinear, and Advanced Optimization Methods

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Exam 12: Queues and Process Simulation Modeling

In queuing systems,some customers may arrive at the system,determine that the line is too long,and decide not to join the queue.This kind of behavior is called ________.

What is the fraction of time that the work station was waiting to pass a customer on to the next element?

If the average waiting time for a customer in a queue is 25 minutes and the customer service rate is 5 customers per minute,calculate the average time a customer spends in the system.

The lines and waiting times for a service initially grow longer,but level off eventually.This is called the transient period.

Use the data below to answer the following question(s). Given: λ = customer arrival rate; μ = customer service rate; L = number of customers in the system; Lq = number of customers in the queue. -The formula to calculate Lq in an FCFS system,Lq = ,is not valid if μ < λ.

Identify the formula that is used to determine the probability that the system is empty (P0).

Determine the probability that the system is empty.

Based on the simulation results,what is the average number of customers in the queue?

Use the data given below to answer the following question(s). Customers arrive at an airline ticket counter at the rate of three customers per minute and can be served at the rate of 4 customers per minute. -Explain Little's law used in queuing systems.

The inventory level that triggers an order is called the ________.

If the average arrival rate increases to 13,the average number of customers in the system ________.

According to the Poisson process,if the mean arrival rate is 2 customers per minute,the mean interval time is 4 minutes.

Use the case given below to answer the following question(s). Reuben went to a diner to have a hamburger and French fries.The person at the cash counter assigned the number 27 to Reuben and told him he would have to wait for his turn. -Which of the following is an example of balking?

What is the probability that the system is empty?

Typically,the first step in process simulation is to ________.

Data and Business Decisions

Descriptive Statistics and Data Analysis

Probability Concepts and Distributions

Sampling and Estimation

Hypothesis Testing and Statistical Inference

Regression Analysis

Forecasting

Introduction to Statistical Quality Control

Building and Using Decision Models

Decision Models With Uncertainty and Risk

Decisions, uncertainty, and Risk

Linear Optimization

Integer, nonlinear, and Advanced Optimization Methods

Filters

Use the data below to answer the following question(s). Given: λ = customer arrival rate; μ = customer service rate; L = number of customers in the system; L_q = number of customers in the queue. -The formula to calculate L_q in an FCFS system,L_q = ,is not valid if μ < λ.

Identify the formula that is used to determine the probability that the system is empty (P₀).