Question 1

In a single-line, multi-server, single phase model, customers form a ________ line.

Accepted Answer

single

Question 2

Which of the following is least likely to be considered a finite customer population?

Accepted Answer

A)  subassemblies in a just-in-time manufacturing environment 
B)  fast food restaurant employees waiting to use the restroom 
C)  planes waiting to take off at an airport 
D)  customers in a grocery store 
E)  a class of 10 students who might visit their professor during office hours 
A)  subassemblies in a just-in-time manufacturing environment 
B)  fast food restaurant employees waiting to use the restroom 
C)  planes waiting to take off at an airport 
D)  customers in a grocery store 
E)  a class of 10 students who might visit their professor during office hours D

Question 3

If the number of customers you can serve per time period is more than the average number of customers arriving, the waiting line grows infinitely.

Accepted Answer

A) True 
 B)False  False

Question 4

Services require a single activity or a series of activities and are identified by what term?

Accepted Answer

A)  round 
B)  step 
C)  phase 
D)  activity set 
E)  facet 
A)  round 
B)  step 
C)  phase 
D)  activity set 
E)  facet

Question 5

Which of the following waiting line systems best describes a drive-through car wash?

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 6

Customers typically consider a multiple-line service system to be fairer than a single-line service system.

Accepted Answer

A) True 
 B)False

Question 7

A short waiting line may result from all of the following except:

Accepted Answer

A)  constant customer arrivals 
B)  excess capacity 
C)  exceptional server efficiency 
D)  demand surges 
E)  a properly designed system 
A)  constant customer arrivals 
B)  excess capacity 
C)  exceptional server efficiency 
D)  demand surges 
E)  a properly designed system

Question 8

Consider a single-line, single-server waiting line system. Suppose that customers arrive according to a Poisson distribution at an average rate of 60 per hour, and the average (exponentially distributed) service time is 45 seconds per customer. What is the average number of customers waiting in line?

Accepted Answer

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

Question 9

50 = ________?

Accepted Answer

A)  5 
B)  0 
C)  undefined 
D)  1 
E)  1/5 
A)  5 
B)  0 
C)  undefined 
D)  1 
E)  1/5

Question 10

A single-line service system is best when specialized servers are used.

Accepted Answer

A) True 
 B)False

Question 11

Assume you have a single channel, single server, and single phase queue. Mean arrival rate is 80/hr and system capacity is 100/hr. What is the average number of customers in the system?

Accepted Answer

A)  2 
B)  8 
C)  4 
D)  80 
E)  0 
A)  2 
B)  8 
C)  4 
D)  80 
E)  0

Question 12

In designing service systems, the main challenge is to design a system with ___________ but not _____ amounts of capacity.

Accepted Answer

The answer of In designing service systems, the main challenge...

Question 13

Consider a single-line, single-server waiting line system. Suppose that customers arrive according to a Poisson distribution at an average rate of 50 per hour, and the average (exponentially distributed) service time is 45 seconds per customer. What is the average time spent in line (in minutes)?

Accepted Answer

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

Question 14

Which of the following is not considered to be a valid performance measure of a waiting line system?

Accepted Answer

A)  the average number of customers waiting in line 
B)  the average number of customers in the system 
C)  the service system 
D)  the average amount of time customers spend waiting 
E)  the system utilization rate 
A)  the average number of customers waiting in line 
B)  the average number of customers in the system 
C)  the service system 
D)  the average amount of time customers spend waiting 
E)  the system utilization rate

Question 15

List examples of dedicating specific servers for specific transactions.

Accepted Answer

limit the number of items that

Question 16

Which of the following waiting line systems best describes a grocery store, where each register has its own line and server?

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 17

Consider a single-line, single-server waiting line system. Suppose that there is only physical space for 2 units in the system (one in line and one being served). The arrival rate λ is 80 people per hour. The manager, Johnny Three Toes, has the choice among workers of different speeds to be the server. He wants to save money by hiring the slowest server that will result in an average number of units in the system (L) equal to 2.
a) Using Johnny Three Toes' strategy, what will the server's service rate per hour (F1F1F1S1F1F1F10) need to be?
b) What is the probability of having 3 or more units in the system?
c) What is wrong with Johnny Three Toes' strategy?

Accepted Answer

(a) 120, (b) 29.63%, (c) Even

Question 18

Which of the following is least likely to be considered a finite customer population?

Accepted Answer

A)  subassemblies in a just-in-time manufacturing environment 
B)  customers in an amusement park 
C)  fast food restaurant employees waiting to use the restroom 
D)  planes waiting to take off at an airport 
E)  a class of 10 students who might visit their professor during office hours 
A)  subassemblies in a just-in-time manufacturing environment 
B)  customers in an amusement park 
C)  fast food restaurant employees waiting to use the restroom 
D)  planes waiting to take off at an airport 
E)  a class of 10 students who might visit their professor during office hours

Question 19

Customers often link long waits to ______ service.

Accepted Answer

The answer of Customers often link long waits to ______...

Question 20

When calculating waiting line metrics you must ensure that the arrival rate and service rate are:

Accepted Answer

A)  for the same day. 
B)  for the same probability. 
C)  for the same site. 
D)  for the same time period. 
E)  for the same utilization factor. 
A)  for the same day. 
B)  for the same probability. 
C)  for the same site. 
D)  for the same time period. 
E)  for the same utilization factor.

In a single-line, multi-server, single phase model, customers form a ________ line.

Which of the following is least likely to be considered a finite customer population?

If the number of customers you can serve per time period is more than the average number of customers arriving, the waiting line grows infinitely.

Services require a single activity or a series of activities and are identified by what term?

Which of the following waiting line systems best describes a drive-through car wash?

Customers typically consider a multiple-line service system to be fairer than a single-line service system.

A short waiting line may result from all of the following except:

5⁰ = ________?

A single-line service system is best when specialized servers are used.

Assume you have a single channel, single server, and single phase queue. Mean arrival rate is 80/hr and system capacity is 100/hr. What is the average number of customers in the system?

In designing service systems, the main challenge is to design a system with _______ but not _ amounts of capacity.

Consider a single-line, single-server waiting line system. Suppose that customers arrive according to a Poisson distribution at an average rate of 50 per hour, and the average (exponentially distributed) service time is 45 seconds per customer. What is the average time spent in line (in minutes)?

Which of the following is not considered to be a valid performance measure of a waiting line system?

List examples of dedicating specific servers for specific transactions.

Which of the following waiting line systems best describes a grocery store, where each register has its own line and server?

Which of the following is least likely to be considered a finite customer population?

Customers often link long waits to ______ service.

When calculating waiting line metrics you must ensure that the arrival rate and service rate are:

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

Exam 19: Waiting Line Models

In a single-line, multi-server, single phase model, customers form a ________ line.

Which of the following is least likely to be considered a finite customer population?

If the number of customers you can serve per time period is more than the average number of customers arriving, the waiting line grows infinitely.

Services require a single activity or a series of activities and are identified by what term?

Which of the following waiting line systems best describes a drive-through car wash?

Customers typically consider a multiple-line service system to be fairer than a single-line service system.

A short waiting line may result from all of the following except:

50 = ________?

A single-line service system is best when specialized servers are used.

Assume you have a single channel, single server, and single phase queue. Mean arrival rate is 80/hr and system capacity is 100/hr. What is the average number of customers in the system?

In designing service systems, the main challenge is to design a system with ___________ but not _____ amounts of capacity.

Consider a single-line, single-server waiting line system. Suppose that customers arrive according to a Poisson distribution at an average rate of 50 per hour, and the average (exponentially distributed) service time is 45 seconds per customer. What is the average time spent in line (in minutes)?

Which of the following is not considered to be a valid performance measure of a waiting line system?

List examples of dedicating specific servers for specific transactions.

Which of the following waiting line systems best describes a grocery store, where each register has its own line and server?

Which of the following is least likely to be considered a finite customer population?

Customers often link long waits to ______ service.

When calculating waiting line metrics you must ensure that the arrival rate and service rate are:

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

5⁰ = ________?

In designing service systems, the main challenge is to design a system with _______ but not _ amounts of capacity.