Question 1

Which of the following best describes queuing theory?

Accepted Answer

A) The study of arrival rates. 
B) The study of service times. 
C) The study of waiting lines. 
D) The evaluation of service time costs. 
A) The study of arrival rates. 
B) The study of service times. 
C) The study of waiting lines. 
D) The evaluation of service time costs.

Question 2

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. What is the Kendall notation for this system?

Accepted Answer

The answer of  
A tax accountant has found that...

Question 3

Which type of queuing system are you likely to encounter at a grocery store?

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 4

A barber shop has one barber, a Poisson arrival rate and exponentially distributed service times. What is the Kendall notation for this system?

Accepted Answer

A) M/M/E 
B) M/M/1 
C) M/E/1 
D) P/M/1 
A) M/M/E 
B) M/M/1 
C) M/E/1 
D) P/M/1

Question 5

A company has recorded the following list of service rates (customers/hour) for one of its servers. What is the mean service time for this server?

Accepted Answer

3 customers per hour

Question 6

The M in M/G/1 stands for

Accepted Answer

A) Markovian inter-arrival times. 
B) Mendelian inter-arrival times. 
C) Mean inter-arrival times. 
D) Mathematical inter-arrival times. 
A) Markovian inter-arrival times. 
B) Mendelian inter-arrival times. 
C) Mean inter-arrival times. 
D) Mathematical inter-arrival times.

Question 7

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 8

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 is the average number of customers waiting for a checker?

Accepted Answer

The answer of  
A grocery store can serve an...

Question 9

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 10

What is the formula for the probability of x arrivals, p(x), under a Poisson distribution with arrival rate $\lambda$?

Accepted Answer

A)   
B)   
C)   
D)   
A)   
B)   
C)   
D)

Question 11

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 12

Customers arrive at a store randomly, following a Poisson distribution at an average rate of 20 per hour. What is the probability of exactly 0, 1 2, and 3 arrivals in a 15 minute period?

Accepted Answer

@#LAT-DLM& = 5 custo

Question 13

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 14

A store is considering adding a second clerk. The customer arrival rate at this new server will be

Accepted Answer

A) twice the old rate. 
B) half the old rate. 
C) the same as the old rate. 
D) unpredictable. 
A) twice the old rate. 
B) half the old rate. 
C) the same as the old rate. 
D) unpredictable.

Question 15

The university computer lab has 10 computers which are constantly being used by students. Users need help from the one lab assistant fairly often. Students ask for help at a Poisson rate of with an average of 4 requests per hour for any one computer. The assistant answers questions as quickly as possible and the service time follows an exponential distribution with mean of 1 minute per help session. The following queuing analysis spreadsheet was developed from this information.
  
-Refer to Exhibit 13.6. Based on this report how much time do students spend getting help before they can resume work on their computers?

Accepted Answer

The answer of  
The university computer lab has 10...

Question 16

What is the mean arrival rate based on the following 10 arrival rate observations?

Accepted Answer

15.1 arriv

Question 17

What is the formula for P(t - T) under the exponential distribution with rate $\mu$?

Accepted Answer

A) 1 -e$\mu$T 
B) e-T 
C) 1 -e-$\mu$T 
D) 1 - eT 
A) 1 -e$\mu$T 
B) e-T 
C) 1 -e-$\mu$T 
D) 1 - eT

Question 18

If a service system has a constant service time, Poisson arrival rates and 2 servers its Kendall notation is

Accepted Answer

A) P/D/2 
B) M/D/2 
C) M/D/1 
D) G/D/2 
A) P/D/2 
B) M/D/2 
C) M/D/1 
D) G/D/2

Question 19

Which type of queuing system are you likely to encounter at a Wendy's restaurant?

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 20

The customer service desk at Joe's Discount Electronics store receives 5 customers per hour on average. On average, each customer requires 10 minutes for service. The customer service desk is staffed by a single person. What is the average time a customer spends in the customer service area if modeled as an M/M/1 queuing system?

Accepted Answer

W = 1 / (@#LAT-DLM&@#LAT-DLM&

Which of the following best describes queuing theory?

Which type of queuing system are you likely to encounter at a grocery store?

A barber shop has one barber, a Poisson arrival rate and exponentially distributed service times. What is the Kendall notation for this system?

A company has recorded the following list of service rates (customers/hour) for one of its servers. What is the mean service time for this server?

The M in M/G/1 stands for

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

What is the formula for the probability of x arrivals, p(x), under a Poisson distribution with arrival rate $\lambda$ ?

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?

Customers arrive at a store randomly, following a Poisson distribution at an average rate of 20 per hour. What is the probability of exactly 0, 1 2, and 3 arrivals in a 15 minute period?

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

A store is considering adding a second clerk. The customer arrival rate at this new server will be

What is the mean arrival rate based on the following 10 arrival rate observations?

What is the formula for P(t - T) under the exponential distribution with rate $\mu$ ?

If a service system has a constant service time, Poisson arrival rates and 2 servers its Kendall notation is

Which type of queuing system are you likely to encounter at a Wendy's restaurant?

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

Discriminant Analysis

Time Series Forecasting

Introduction to Simulation Using Risk Solver Platform

Decision Analysis

Project Management Online

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Exam 13: Queuing Theory

Which of the following best describes queuing theory?

Which type of queuing system are you likely to encounter at a grocery store?

A barber shop has one barber, a Poisson arrival rate and exponentially distributed service times. What is the Kendall notation for this system?

A company has recorded the following list of service rates (customers/hour) for one of its servers. What is the mean service time for this server?

The M in M/G/1 stands for

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

What is the formula for the probability of x arrivals, p(x), under a Poisson distribution with arrival rate λ\lambdaλ ?

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?

Customers arrive at a store randomly, following a Poisson distribution at an average rate of 20 per hour. What is the probability of exactly 0, 1 2, and 3 arrivals in a 15 minute period?

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

A store is considering adding a second clerk. The customer arrival rate at this new server will be

What is the mean arrival rate based on the following 10 arrival rate observations?

What is the formula for P(t - T) under the exponential distribution with rate μ\muμ ?

If a service system has a constant service time, Poisson arrival rates and 2 servers its Kendall notation is

Which type of queuing system are you likely to encounter at a Wendy's restaurant?

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

Discriminant Analysis

Time Series Forecasting

Introduction to Simulation Using Risk Solver Platform

Decision Analysis

Project Management Online

Filters

What is the formula for the probability of x arrivals, p(x), under a Poisson distribution with arrival rate $\lambda$ ?

What is the formula for P(t - T) under the exponential distribution with rate $\mu$ ?