Question 1

Based on the simulation results,the average time a customer has to spend in the queue is ________.

Accepted Answer

A) 18 minutes 54 seconds 
B) 23 minutes 
C) 35 minutes 11 seconds 
D) 10 minutes 54 seconds 
A) 18 minutes 54 seconds 
B) 23 minutes 
C) 35 minutes 11 seconds 
D) 10 minutes 54 seconds

Question 2

Compute the probability that the system has at least one customer.

Accepted Answer

A) 0.47 
B) 0.53 
C) 0.95 
D) 0.05 
A) 0.47 
B) 0.53 
C) 0.95 
D) 0.05

Question 3

What is the probability that the system is not empty?

Accepted Answer

A) 0.60 
B) 0.40 
C) 0.83 
D) 0.17 
A) 0.60 
B) 0.40 
C) 0.83 
D) 0.17

Question 4

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.
-Show the steps involved in the calculation of the average time a customer spends in the queue.

Accepted Answer

From the given data,λ = 3 cust

Question 5

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 percentage of customers entering the process divided by the total number that tried to enter is ________.

Accepted Answer

A) 2.87 
B) 0.49 
C) 0.79 
D) 0.42 
A) 2.87 
B) 0.49 
C) 0.79 
D) 0.42

Question 6

If the average arrival rate increases to 14,the average number of customers in the queue ________.

Accepted Answer

A) reduces by 27.03 
B) reduces by 23.06 
C) increases by 23.06 
D) increases by 27.03 
A) reduces by 27.03 
B) reduces by 23.06 
C) increases by 23.06 
D) increases by 27.03

Question 7

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 fraction time working for work station 1 is ________.

Accepted Answer

A) 0.00 minutes 
B) 0.97 minutes 
C) 0.42 minutes 
D) 0.49 minutes 
A) 0.00 minutes 
B) 0.97 minutes 
C) 0.42 minutes 
D) 0.49 minutes

Question 8

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.
-If Wq = 4 minutes and μ = 2 customers/minute,what is the average time a customer spends in the system?

Accepted Answer

Using the formula,W

Question 9

What is the final number of customers remaining after simulation?

Accepted Answer

A) 1580.80 
B) 1410.90 
C) 1406.87 
D) 1405.90 
A) 1580.80 
B) 1410.90 
C) 1406.87 
D) 1405.90

Question 10

Determine the average time a customer spends in queue 1.

Accepted Answer

A) 3 minutes 28 seconds 
B) 4 minutes 42 seconds 
C) 5 minutes 5 seconds 
D) 2 minutes 58 seconds 
A) 3 minutes 28 seconds 
B) 4 minutes 42 seconds 
C) 5 minutes 5 seconds 
D) 2 minutes 58 seconds

Question 11

What is the average time a customer has to spend in the queue?

Accepted Answer

A) approximately 240 seconds 
B) approximately 20 seconds 
C) approximately 90 seconds 
D) approximately 5 seconds 
A) approximately 240 seconds 
B) approximately 20 seconds 
C) approximately 90 seconds 
D) approximately 5 seconds

Question 12

It is common for customers to leave a queue before being served.This kind of behavior is known as ________.

Accepted Answer

A) balking 
B) jockeying 
C) reneging 
D) ratifying 
A) balking 
B) jockeying 
C) reneging 
D) ratifying

Question 13

In SimQuick,buffers are the places where the objects enter the process.

Accepted Answer

A) True 
 B)False

Question 14

Consider a situation where service times follow an exponential distribution.If the probability of the average service time,t,exceeding the mean is low at 0.368,which of the following is likely to be true?

Accepted Answer

A) There are a large number of long service times and a few short ones. 
B) There are a large number of short service times and a few long ones. 
C) There are a large number of balking scenarios and a few jockeying scenarios. 
D) There are a large number of jockeying scenarios and a few balking scenarios. 
A) There are a large number of long service times and a few short ones. 
B) There are a large number of short service times and a few long ones. 
C) There are a large number of balking scenarios and a few jockeying scenarios. 
D) There are a large number of jockeying scenarios and a few balking scenarios.

Question 15

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; LS1U1B1qS1U1B0 = number of customers in the queue.
-In an FCFS system,L =   only if μ = λ.

Accepted Answer

A) True 
 B)False

Question 16

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 2 is ________.

Accepted Answer

A) 3.39 
B) 1405.90 
C) 1410.90 
D) 1406.87 
A) 3.39 
B) 1405.90 
C) 1410.90 
D) 1406.87

Question 17

Use the model assumptions given below to answer the following question(s).
Assume Poisson arrivals with a mean arrival rate λ,exponential service times with mean service rate μ,a single server,and an FCFS queue discipline.
-The formula that is used to determine the average number of customers in the system (L)is ________.

Accepted Answer

A) L =   
B) L =   
C) L =   
D) L =   
A) L =   
B) L =   
C) L =   
D) L =

Based on the simulation results,the average time a customer has to spend in the queue is ________.

Compute the probability that the system has at least one customer.

What is the probability that the system is not empty?

If the average arrival rate increases to 14,the average number of customers in the queue ________.

What is the final number of customers remaining after simulation?

Determine the average time a customer spends in queue 1.

What is the average time a customer has to spend in the queue?

It is common for customers to leave a queue before being served.This kind of behavior is known as ________.

In SimQuick,buffers are the places where the objects enter the process.

Consider a situation where service times follow an exponential distribution.If the probability of the average service time,t,exceeding the mean is low at 0.368,which of the following is likely to be true?

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. -In an FCFS system,L = only if μ = λ.

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

Exam 12: Queues and Process Simulation Modeling

Based on the simulation results,the average time a customer has to spend in the queue is ________.

Compute the probability that the system has at least one customer.

What is the probability that the system is not empty?

If the average arrival rate increases to 14,the average number of customers in the queue ________.

What is the final number of customers remaining after simulation?

Determine the average time a customer spends in queue 1.

What is the average time a customer has to spend in the queue?

It is common for customers to leave a queue before being served.This kind of behavior is known as ________.

In SimQuick,buffers are the places where the objects enter the process.

Consider a situation where service times follow an exponential distribution.If the probability of the average service time,t,exceeding the mean is low at 0.368,which of the following is likely to be true?

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. -In an FCFS system,L = only if μ = λ.

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. -In an FCFS system,L = only if μ = λ.