Question 1

Describe the relative benefits of using a single-line system vs. a multi-line system.

Accepted Answer

Changing to a single-line model from a m

Question 2

For a single-server, single-line, single-phase waiting line system, where F1F1F1S1F1F1F10 represents the mean arrival rate of customers and F1F1F1S1F1F1F10 represents the mean service rate, what is the formula for the average number of customers in the system?

Accepted Answer

A)  F1F1F1S1F1F1F10 / F1F1F1S1F1F1F10 
B)  F1F1F1S1F1F1F10 / (F1F1F1S1F1F1F10F1F1F1S1F1F1F10F1F1F1S1F1F1F10) 
C)  F1F1F1S1F1F1F102 / F1F1F1S1F1F1F10(F1F1F1S1F1F1F10F1F1F1S1F1F1F10F1F1F1S1F1F1F10) 
D)  1 / (F1F1F1S1F1F1F10F1F1F1S1F1F1F10F1F1F1S1F1F1F10) 
E)  F1F1F1S1F1F1F10 / F1F1F1S1F1F1F10(F1F1F1S1F1F1F10F1F1F1S1F1F1F10F1F1F1S1F1F1F10) 
A)  F1F1F1S1F1F1F10 / F1F1F1S1F1F1F10 
B)  F1F1F1S1F1F1F10 / (F1F1F1S1F1F1F10F1F1F1S1F1F1F10F1F1F1S1F1F1F10) 
C)  F1F1F1S1F1F1F102 / F1F1F1S1F1F1F10(F1F1F1S1F1F1F10F1F1F1S1F1F1F10F1F1F1S1F1F1F10) 
D)  1 / (F1F1F1S1F1F1F10F1F1F1S1F1F1F10F1F1F1S1F1F1F10) 
E)  F1F1F1S1F1F1F10 / F1F1F1S1F1F1F10(F1F1F1S1F1F1F10F1F1F1S1F1F1F10F1F1F1S1F1F1F10)

Question 3

Which of the following waiting line systems best describes a bank with a single waiting line that feeds customers to multiple identical servers?

Accepted Answer

A)  single-server, single-phase 
B)  single-server, multi-phase 
C)  multi-server, single-line, single-phase 
D)  multi-server, multi-line, single-phase 
E)  multi-server, multi-phase 
A)  single-server, single-phase 
B)  single-server, multi-phase 
C)  multi-server, single-line, single-phase 
D)  multi-server, multi-line, single-phase 
E)  multi-server, multi-phase

Question 4

Services require a single activity or a series of activities and are identified by the term phase.

Accepted Answer

A) True 
 B)False

Question 5

Consider a single-server queuing system (with Poisson arrivals and exponential service times). If the arrival rate is 30 units per hour, and each customer takes 30 seconds on average to be served, what is the average length of the line?

Accepted Answer

A)  1.03 
B)  F1F1F1S1F1F1F101.03 
C)  0.166 
D)  0.333 
E)  0.083 
A)  1.03 
B)  F1F1F1S1F1F1F101.03 
C)  0.166 
D)  0.333 
E)  0.083

Question 6

What are some variations of the mathematical waiting line models that are not described in Supplement C?

Accepted Answer

finite queue length,

Question 7

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

Accepted Answer

A)  customers in an amusement park 
B)  a class of 500 students who might visit their professor during office hours 
C)  customers in a grocery store 
D)  planes waiting to take off at an airport 
E)  cars taking Exit 76 off of a freeway during rush hour 
A)  customers in an amusement park 
B)  a class of 500 students who might visit their professor during office hours 
C)  customers in a grocery store 
D)  planes waiting to take off at an airport 
E)  cars taking Exit 76 off of a freeway during rush hour

Question 8

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

Accepted Answer

A) True 
 B)False

Question 9

The two elements that define a waiting line system are (1) the population source of its customers and (2) the process or service system itself.

Accepted Answer

A) True 
 B)False

Question 10

System server capacity is a function of ______ and _______.

Accepted Answer

A)  phase, lines 
B)  time, lighting 
C)  facilities, management 
D)  facilities, proficiency 
E)  utilization, proficiency 
A)  phase, lines 
B)  time, lighting 
C)  facilities, management 
D)  facilities, proficiency 
E)  utilization, proficiency

Question 11

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?

Accepted Answer

The answer of Consider a single-line, single-server waiting line system....

Question 12

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?

Accepted Answer

A)  29.63% 
B)  33.33% 
C)  0.00% 
D)  9.88% 
E)  66.67% 
A)  29.63% 
B)  33.33% 
C)  0.00% 
D)  9.88% 
E)  66.67%

Question 13

Which of the following is not considered to be an element of a waiting line system?

Accepted Answer

A)  the priorities used for controlling the line 
B)  the customer population source 
C)  the service system 
D)  the arrival and service patterns 
E)  the average amount of time customers spend waiting 
A)  the priorities used for controlling the line 
B)  the customer population source 
C)  the service system 
D)  the arrival and service patterns 
E)  the average amount of time customers spend waiting

Question 14

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

Accepted Answer

A)  subassemblies in a just-in-time manufacturing environment 
B)  customers in an amusement park 
C)  a class of 500 students who might visit their professor during office hours 
D)  customers in a grocery store 
E)  cars taking Exit 76 off of a freeway during rush hour 
A)  subassemblies in a just-in-time manufacturing environment 
B)  customers in an amusement park 
C)  a class of 500 students who might visit their professor during office hours 
D)  customers in a grocery store 
E)  cars taking Exit 76 off of a freeway during rush hour

Question 15

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

Accepted Answer

A) True 
 B)False

Question 16

Which of the following is not an assumption of the waiting line models presented in the textbook?

Accepted Answer

A)  balking is allowed 
B)  reneging is not allowed 
C)  jockeying is not allowed 
D)  customer arrival rate is described by a Poisson distribution 
E)  service times are described by an exponential distribution 
A)  balking is allowed 
B)  reneging is not allowed 
C)  jockeying is not allowed 
D)  customer arrival rate is described by a Poisson distribution 
E)  service times are described by an exponential distribution

Question 17

The university replication facility provides copier repair service for the university and for local businesses. Over the last year the mean arrival rate is 55 copiers a month. The repair facility uses two identical repair technicians who can repair an average of 30 copiers each month. The system is set up as a single channel, first come first served, multi-server system.
a) What is the utilization of the service center?
b) What is the probability that no copiers will be in the system?
c) What is the average number of copiers waiting in line?
d) What is the average time a copier is waiting to be repaired?
e) What is the average number of copiers in the system?

Accepted Answer

a) 91.7%
b

Question 18

Waiting line models are important to a company because they directly affect customer service _________.

Accepted Answer

The answer of Waiting line models are important to a...

Question 19

What occurs when a customer enters one line and then switches to a different line in an effort to reduce his or her waiting time?

Accepted Answer

A)  balking 
B)  walking 
C)  reneging 
D)  vacillating 
E)  jockeying 
A)  balking 
B)  walking 
C)  reneging 
D)  vacillating 
E)  jockeying

Question 20

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

Accepted Answer

A)  customers in an amusement park 
B)  a class of 500 students who might visit their professor during office hours 
C)  customers in a grocery store 
D)  cars taking Exit 76 off of a freeway during rush hour 
E)  fast food restaurant employees waiting to use the restroom 
A)  customers in an amusement park 
B)  a class of 500 students who might visit their professor during office hours 
C)  customers in a grocery store 
D)  cars taking Exit 76 off of a freeway during rush hour 
E)  fast food restaurant employees waiting to use the restroom

Describe the relative benefits of using a single-line system vs. a multi-line system.

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 number of customers in the system?

Which of the following waiting line systems best describes a bank with a single waiting line that feeds customers to multiple identical servers?

Services require a single activity or a series of activities and are identified by the term phase.

Consider a single-server queuing system (with Poisson arrivals and exponential service times). If the arrival rate is 30 units per hour, and each customer takes 30 seconds on average to be served, what is the average length of the line?

What are some variations of the mathematical waiting line models that are not described in Supplement C?

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

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

The two elements that define a waiting line system are (1) the population source of its customers and (2) the process or service system itself.

System server capacity is a function of and _.

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?

Which of the following is not considered to be an element of a waiting line system?

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

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

Which of the following is not an assumption of the waiting line models presented in the textbook?

Waiting line models are important to a company because they directly affect customer service _________.

What occurs when a customer enters one line and then switches to a different line in an effort to reduce his or her waiting time?

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

Introduction to Operations Management

Operations Strategy and Competitiveness

Product Design and Process Selection

Supply Chain Management

Total Quality Management

Statistical Quality Control

Just-In-Time and Lean Systems

Forecasting

Capacity Planning and Facility Location

Facility Layout

Work System Design

Inventory Management

Aggregate Planning

Resource Planning

Scheduling

Project Management

Spreadsheet Modeling: An Introduction

Introduction to Optimization

Master Scheduling and Rough-Cut Capacity Planning

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Exam 19: Waiting Line Models

Describe the relative benefits of using a single-line system vs. a multi-line system.

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 number of customers in the system?

Which of the following waiting line systems best describes a bank with a single waiting line that feeds customers to multiple identical servers?

Services require a single activity or a series of activities and are identified by the term phase.

Consider a single-server queuing system (with Poisson arrivals and exponential service times). If the arrival rate is 30 units per hour, and each customer takes 30 seconds on average to be served, what is the average length of the line?

What are some variations of the mathematical waiting line models that are not described in Supplement C?

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

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

The two elements that define a waiting line system are (1) the population source of its customers and (2) the process or service system itself.

System server capacity is a function of ______ and _______.

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?

Which of the following is not considered to be an element of a waiting line system?

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

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

Which of the following is not an assumption of the waiting line models presented in the textbook?

Waiting line models are important to a company because they directly affect customer service _________.

What occurs when a customer enters one line and then switches to a different line in an effort to reduce his or her waiting time?

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

Introduction to Operations Management

Operations Strategy and Competitiveness

Product Design and Process Selection

Supply Chain Management

Total Quality Management

Statistical Quality Control

Just-In-Time and Lean Systems

Forecasting

Capacity Planning and Facility Location

Facility Layout

Work System Design

Inventory Management

Aggregate Planning

Resource Planning

Scheduling

Project Management

Spreadsheet Modeling: An Introduction

Introduction to Optimization

Master Scheduling and Rough-Cut Capacity Planning

Filters

System server capacity is a function of and _.