Question 1

Which type of queuing system are you likely to encounter at an ATM?

Accepted Answer

A) Single waiting line,single service station. 
B) Multiple waiting lines,single service station. 
C) Single waiting line,multiple service stations. 
D) Multiple waiting lines,multiple service stations. 
A) Single waiting line,single service station. 
B) Multiple waiting lines,single service station. 
C) Single waiting line,multiple service stations. 
D) Multiple waiting lines,multiple service stations.

Question 2

Which of the following is a reason to employ queuing theory?

Accepted Answer

A) To reduce customer wait time in line. 
B) To reduce service times. 
C) To generate more arrivals to the system. 
D) To reduce worker idle time in line. 
A) To reduce customer wait time in line. 
B) To reduce service times. 
C) To generate more arrivals to the system. 
D) To reduce worker idle time in line.

Question 3

Exhibit 13.
The following questions refer to the information and output below.
A tax accountant has found that the time to serve a customer has a mean of 30 minutes or 0.5 hours)and a standard deviation of 6 minutes or 0.1 hours).Customer arrivals follow a Poisson distribution with an average of 60 minutes between arrivals.The following queuing analysis spreadsheet was developed from this information.
  
-Refer to Exhibit 13.7.Based on this report what is the probability that a customer does not have to wait for assistance with his or her taxes?

Accepted Answer

The answer of Exhibit 13.
The following questions refer to the...

Question 4

Customers arrive at a store randomly,following a Poisson distribution at an average rate of 90 per hour.How many customers would you expect to arrive in a 20 minute period?

Accepted Answer

30 custome

Question 5

The amount of time a customer spends with the server is referred to as

Accepted Answer

A) system time. 
B) queue time. 
C) service time. 
D) served time. 
A) system time. 
B) queue time. 
C) service time. 
D) served time.

Question 6

Joe's Copy Center has 10 copiers.They break down at a rate of 0.02 copiers per hour and are sent to the service facility.What is the average arrival rate of broken copiers to the service facility?

Accepted Answer

A) 0.02 
B) 0.2 
C) 10 
D) It cannot be determined from the information provided. 
A) 0.02 
B) 0.2 
C) 10 
D) It cannot be determined from the information provided.

Question 7

Exhibit 13.
The following questions refer to the information and output below.
A computer printer in a large administrative office has a printer buffer memory to store printing jobs)capacity of 3 jobs.If the buffer is full when a user wants to print a file the user is told that the job cannot be printed and to try again later.There are so many users in this office that we can assume that there is an infinite calling population.Jobs arrive at the printer at a Poisson rate of 55 jobs per hour and take an average of 1 minute to print.Printing times are exponentially distributed.The following queuing analysis spreadsheet was developed from this information.
  
-Refer to Exhibit 13.5.Based on this report what is the average number of jobs waiting to be printed?

Accepted Answer

The answer of Exhibit 13.
The following questions refer to the...

Question 8

Exhibit 13.3
The following questions refer to the information below.
A company has recorded the following customer inter-arrival times and service times for 10 customers at one of its single teller service lines.Assume the data are exponentially distributed and the 10 data points represent a reasonable sample.
All time in minutes
 $$\begin{array} { r r r } 
\text { Customer } & \text { Inter-arrival } & \text { Service } \
\hline 1 & 11.08 & 2.20 \
2 & 2.50 & 2.50 \
3 & 6.00 & 1.10 \
4 & 5.75 & 14.50 \
5 & 8.50 & 2.00 \
6 & 4.15 & 2.70 \
7 & 15.50 & 5.00 \
8 & 13.00 & 8.50 \
9 & 10.50 & 5.00 \
10 & 6.00 & 1.50
\end{array}$$
-Refer to Exhibit 13.3.What is the average time a customer spends in the service line?

Accepted Answer

? = 7.23,? = 13.33,W

Question 9

Exhibit 13.
The following questions refer to the information and output below.
A computer printer in a large administrative office has a printer buffer memory to store printing jobs)capacity of 3 jobs.If the buffer is full when a user wants to print a file the user is told that the job cannot be printed and to try again later.There are so many users in this office that we can assume that there is an infinite calling population.Jobs arrive at the printer at a Poisson rate of 55 jobs per hour and take an average of 1 minute to print.Printing times are exponentially distributed.The following queuing analysis spreadsheet was developed from this information.
  
-Refer to Exhibit 13.5.What is the Kendall notation for this system?

Accepted Answer

M/M/1/ wit

Question 10

Exhibit 13.2
The following questions refer to the information and output below.
A barber shop has one barber who can give 12 haircuts per hour.Customers arrive at a rate of 8 customers per hour.Customer inter-arrival times and service times are exponentially distributed.The following queuing analysis spreadsheet was developed from this information.
-Refer to Exhibit 13.2.Based on this report what percent of the time is the barber busy cutting hair?

Accepted Answer

The answer of Exhibit 13.2
The following questions refer to the...

Question 11

Which of the following is the typical operating characteristic for the probability an arriving unit has to wait for service?

Accepted Answer

A) Wp 
B) P0 
C) Pw 
D) Pn 
A) Wp 
B) P0 
C) Pw 
D) Pn

Question 12

Exhibit 13.1
The following questions are based on the output below.
A store currently operates its service system with 1 operator.Arrivals follow a Poisson distribution and service times are exponentially distributed.The following spreadsheet has been developed for the system.
  
-Refer to Exhibit 13.1.What is the probability that a customer must wait in queue before being served?

Accepted Answer

A) 0.00 
B) 0.25 
C) 0.75 
D) 1.00 
A) 0.00 
B) 0.25 
C) 0.75 
D) 1.00

Question 13

A common queue discipline used in practice is

Accepted Answer

A) first-in-first-out 
B) random 
C) last-in-first-out 
D) group arrival 
A) first-in-first-out 
B) random 
C) last-in-first-out 
D) group arrival

Question 14

Exhibit 13.
The following questions refer to the information and output below.
A tax accountant has found that the time to serve a customer has a mean of 30 minutes or 0.5 hours)and a standard deviation of 6 minutes or 0.1 hours).Customer arrivals follow a Poisson distribution with an average of 60 minutes between arrivals.The following queuing analysis spreadsheet was developed from this information.
  
-Refer to Exhibit 13.7.Based on this report what is the average number of customers waiting to be helped?

Accepted Answer

The answer of Exhibit 13.
The following questions refer to the...

Question 15

Customers arrive at a store randomly,following a Poisson distribution at an average rate of 90 per hour.How many customers arrive per minute,on average?

Accepted Answer

1.5 custom

Question 16

Which of the following is the typical operating characteristic for average number of units in a queue?

Accepted Answer

A) W 
B) Wq 
C) L 
D) Lq 
A) W 
B) Wq 
C) L 
D) Lq

Question 17

The standardized queuing system notation such as M/M/1 or M/G/2 is referred to as

Accepted Answer

A) Kendall notation. 
B) Erlang notation. 
C) Poisson notation. 
D) Queuing notation. 
A) Kendall notation. 
B) Erlang notation. 
C) Poisson notation. 
D) Queuing notation.

Question 18

If the arrival process is modeled as a Poisson random variable with arrival rate λ,then the average time between arrivals is

Accepted Answer

A) 1/μ 
B) 1/λ 
C) 1/λ2 
D) σ 
A) 1/μ 
B) 1/λ 
C) 1/λ2 
D) σ

Question 19

Exhibit 13.
The following questions refer to the information and output below.
A grocery store can serve an average of 360 customers per hour.The service times are exponentially distributed.The store has 4 checkout lines each of which serves 90 customers per hour.Customers arrive at the store at a Poisson rate of 240 customers per hour.The following queuing analysis spreadsheet was developed from this information.
  
-Refer to Exhibit 13.4.Based on this report what percent of the time is a grocery clerk busy serving a customer?

Accepted Answer

The answer of Exhibit 13.
The following questions refer to the...

Question 20

For a Poisson random variable,λ represents the number of arrivals per time period

Accepted Answer

A) maximum 
B) minimum 
C) average 
D) standard deviation of 
A) maximum 
B) minimum 
C) average 
D) standard deviation of

Which type of queuing system are you likely to encounter at an ATM?

Which of the following is a reason to employ queuing theory?

Customers arrive at a store randomly,following a Poisson distribution at an average rate of 90 per hour.How many customers would you expect to arrive in a 20 minute period?

The amount of time a customer spends with the server is referred to as

Joe's Copy Center has 10 copiers.They break down at a rate of 0.02 copiers per hour and are sent to the service facility.What is the average arrival rate of broken copiers to the service facility?

Which of the following is the typical operating characteristic for the probability an arriving unit has to wait for service?

A common queue discipline used in practice is

Customers arrive at a store randomly,following a Poisson distribution at an average rate of 90 per hour.How many customers arrive per minute,on average?

Which of the following is the typical operating characteristic for average number of units in a queue?

The standardized queuing system notation such as M/M/1 or M/G/2 is referred to as

If the arrival process is modeled as a Poisson random variable with arrival rate λ,then the average time between arrivals is

For a Poisson random variable,λ represents the number of arrivals per time period

Introduction to Modeling and Decision Analysis

Introduction to Optimization and Linear Programming

Modeling and Solving Lp Problems in a Spreadsheet

Sensitivity Analysis and the Simplex Method

Network Modeling

Integer Linear Programming

Goal Programming and Multiple Objective Optimization

Nonlinear Programming and Evolutionary Optimization

Regression Analysis

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Time Series Forecasting

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Exam 13: Queuing Theory

Which type of queuing system are you likely to encounter at an ATM?

Which of the following is a reason to employ queuing theory?

Customers arrive at a store randomly,following a Poisson distribution at an average rate of 90 per hour.How many customers would you expect to arrive in a 20 minute period?

The amount of time a customer spends with the server is referred to as

Joe's Copy Center has 10 copiers.They break down at a rate of 0.02 copiers per hour and are sent to the service facility.What is the average arrival rate of broken copiers to the service facility?

Which of the following is the typical operating characteristic for the probability an arriving unit has to wait for service?

A common queue discipline used in practice is

Customers arrive at a store randomly,following a Poisson distribution at an average rate of 90 per hour.How many customers arrive per minute,on average?

Which of the following is the typical operating characteristic for average number of units in a queue?

The standardized queuing system notation such as M/M/1 or M/G/2 is referred to as

If the arrival process is modeled as a Poisson random variable with arrival rate λ,then the average time between arrivals is

For a Poisson random variable,λ represents the number of arrivals per time period

Introduction to Modeling and Decision Analysis

Introduction to Optimization and Linear Programming

Modeling and Solving Lp Problems in a Spreadsheet

Sensitivity Analysis and the Simplex Method

Network Modeling

Integer Linear Programming

Goal Programming and Multiple Objective Optimization

Nonlinear Programming and Evolutionary Optimization

Regression Analysis

Data Mining

Time Series Forecasting

Introduction to Simulation Using Analytic Solver Platform

Decision Analysis

Project Management Online

Filters