Question 1

Assume the average arrival rate at a service center is five customers per hour.Determine the probability of three customers arriving in any random hour.

Accepted Answer

A) 4% 
B) 5% 
C) 10% 
D) 14% 
A) 4% 
B) 5% 
C) 10% 
D) 14%

Question 2

The primary objective of managing waiting lines is ______.

Accepted Answer

A) to maximize customer satisfaction 
B) to minimize their total costs throughout any service or manufacturing facility 
C) to make people who are waiting feel that they are not really waiting for a long time 
D) to maximize throughput 
A) to maximize customer satisfaction 
B) to minimize their total costs throughout any service or manufacturing facility 
C) to make people who are waiting feel that they are not really waiting for a long time 
D) to maximize throughput

Question 3

Which of the following is the most commonly used queue disciplines?

Accepted Answer

A) last in,first out 
B) first in,first out 
C) random order 
D) alphabetical order of last names 
A) last in,first out 
B) first in,first out 
C) random order 
D) alphabetical order of last names

Question 4

In waiting line systems,a _____ level of service means _______ waiting time costs because of reductions in customer dissatisfaction.

Accepted Answer

A) low,lower 
B) high,lower 
C) high,higher 
D) low,higher 
A) low,lower 
B) high,lower 
C) high,higher 
D) low,higher

Question 5

In waiting line problems,the service time is assumed to follow a probability distribution known as ______.

Accepted Answer

A) discrete Poisson distribution 
B) binomial distribution 
C) normal distribution 
D) negative exponential distribution 
A) discrete Poisson distribution 
B) binomial distribution 
C) normal distribution 
D) negative exponential distribution

Question 6

In waiting line problems,the service rate is assumed to follow a probability distribution known as ______.

Accepted Answer

A) discrete Poisson distribution 
B) binomial distribution 
C) normal distribution 
D) negative exponential distribution 
A) discrete Poisson distribution 
B) binomial distribution 
C) normal distribution 
D) negative exponential distribution

Question 7

The number of patients assigned to a doctor is an example of ______.

Accepted Answer

A) limited population source 
B) constant population source 
C) infinite population source 
D) discrete population source 
A) limited population source 
B) constant population source 
C) infinite population source 
D) discrete population source

Question 8

In queuing theory,a queue represents ______.

Accepted Answer

A) a certain number of customers waiting for service at a facility 
B) the number of people waiting to attend on customers 
C) the infrastructure to serve customers 
D) the service level 
A) a certain number of customers waiting for service at a facility 
B) the number of people waiting to attend on customers 
C) the infrastructure to serve customers 
D) the service level

Question 9

Which of the following is NOT a tangible cost of waiting lines?

Accepted Answer

A) wages paid to workers while the factory remains idle 
B) costs of materials used while waiting 
C) lost sales because customers decided to go elsewhere 
D) lost productivity while workers are idle 
A) wages paid to workers while the factory remains idle 
B) costs of materials used while waiting 
C) lost sales because customers decided to go elsewhere 
D) lost productivity while workers are idle

Question 10

If the average number of customers served per hour is five,then the probability that the service exceeds 27 minutes for any customer is ______.

Accepted Answer

A) 74.1% 
B) 10.5% 
C) 36.8% 
D) 17.4% 
A) 74.1% 
B) 10.5% 
C) 36.8% 
D) 17.4%

Question 11

Customers at an amusement park arrive at the rate of 10 customers per hour.The entry booth is staffed by one employee.The mean service time at the booth to provide service to each customer is 5 minutes.The arrival rate follows a Poisson distribution,and the service time at the booth follows a negative exponential distribution.Determine the percentage of time the employee at the service booth will be idle.

Accepted Answer

A) 17% 
B) 44% 
C) 12% 
D) 43% 
A) 17% 
B) 44% 
C) 12% 
D) 43%

Question 12

In ______,______ structure,the customer joins a single waiting line but receives service in multiple phases.

Accepted Answer

A) single channel,single-phase 
B) single channel,multiphase 
C) multichannel,multiphase 
D) multichannel,single-phase 
A) single channel,single-phase 
B) single channel,multiphase 
C) multichannel,multiphase 
D) multichannel,single-phase

Question 13

______ represents a certain number of customers waiting for service at a facility.

Accepted Answer

A) Queue 
B) Service level 
C) Service capacity 
D) Arrival rate 
A) Queue 
B) Service level 
C) Service capacity 
D) Arrival rate

Question 14

If the average number of customers served per hour is four,then the probability that the service exceeds 15 minutes for any customer is ______.

Accepted Answer

A) 74.1% 
B) 54.9% 
C) 36.8% 
D) 17.4% 
A) 74.1% 
B) 54.9% 
C) 36.8% 
D) 17.4%

Question 15

In queuing models,if the service rate forms a Poisson distribution,then the service times have a ______.

Accepted Answer

A) binomial distribution 
B) positive exponential distribution 
C) Poisson distribution 
D) negative exponential distribution 
A) binomial distribution 
B) positive exponential distribution 
C) Poisson distribution 
D) negative exponential distribution

Question 16

______ refers to the total number of counters,service bays,or other providers that are part of the system.

Accepted Answer

A) Number of phases 
B) Number of channels 
C) Number of queues 
D) Number of service systems 
A) Number of phases 
B) Number of channels 
C) Number of queues 
D) Number of service systems

Question 17

Let us assume the average number of customers served per hour is five customers.What is the probability that the service exceeds 1 hour for any customer?

Accepted Answer

A) 0.67% 
B) 1.23% 
C) 0.98% 
D) 9.00% 
A) 0.67% 
B) 1.23% 
C) 0.98% 
D) 9.00%

Question 18

In waiting line systems,the cost of service levels provided are ______ to capacity-related costs.

Accepted Answer

A) directly related 
B) linear 
C) inversely related 
D) proportional 
A) directly related 
B) linear 
C) inversely related 
D) proportional

Question 19

If the average number of customers served per hour is three,then the probability that the service exceeds 12 minutes for any customer is ______.

Accepted Answer

A) 74.1% 
B) 54.9% 
C) 36.8% 
D) 17.4% 
A) 74.1% 
B) 54.9% 
C) 36.8% 
D) 17.4%

Question 20

In the notation used to identify the single-channel,constant service rate queuing model M/D/1,the letter D refers to ______.

Accepted Answer

A) Poisson distribution of arrival rates 
B) Poisson distribution of service rates 
C) single channel or server 
D) constant service rate 
A) Poisson distribution of arrival rates 
B) Poisson distribution of service rates 
C) single channel or server 
D) constant service rate

Exam 26: Waiting Line Models

Assume the average arrival rate at a service center is five customers per hour.Determine the probability of three customers arriving in any random hour.

The primary objective of managing waiting lines is ______.

Which of the following is the most commonly used queue disciplines?

In waiting line systems,a _____ level of service means _______ waiting time costs because of reductions in customer dissatisfaction.

In waiting line problems,the service time is assumed to follow a probability distribution known as ______.

In waiting line problems,the service rate is assumed to follow a probability distribution known as ______.

The number of patients assigned to a doctor is an example of ______.

In queuing theory,a queue represents ______.

Which of the following is NOT a tangible cost of waiting lines?

If the average number of customers served per hour is five,then the probability that the service exceeds 27 minutes for any customer is ______.

In ______,______ structure,the customer joins a single waiting line but receives service in multiple phases.

______ represents a certain number of customers waiting for service at a facility.

If the average number of customers served per hour is four,then the probability that the service exceeds 15 minutes for any customer is ______.

In queuing models,if the service rate forms a Poisson distribution,then the service times have a ______.

______ refers to the total number of counters,service bays,or other providers that are part of the system.

Let us assume the average number of customers served per hour is five customers.What is the probability that the service exceeds 1 hour for any customer?

In waiting line systems,the cost of service levels provided are ______ to capacity-related costs.

If the average number of customers served per hour is three,then the probability that the service exceeds 12 minutes for any customer is ______.

In the notation used to identify the single-channel,constant service rate queuing model M/D/1,the letter D refers to ______.

Introduction to Managing Global Operations and Supply Chains

Operations and Supply Chain Strategies

Project Management

Supplement: Project Management

Product and Service Innovations

Supplement: Reliability

Managing for Quality

Quality Improvement and Control Tools

Capacity Planning

Supply Chain Design and Location Planning

Process Design and Layout Planning

Supplement: Tools for Analyzing, Designing, and Selecting Processes and Layouts

Supplier Management

Logistics Management

Demand Management and Customer Service

Demand Forecasting Methods

Lean Operations and Supply Chains

Inventory Management

Inventory Control Models

Sales and Operations Planning

Master Scheduling and Material Requirements Planning

Supplement: Capacity Requirements Planning, MRP II, ERP, and DRP

Detailed Scheduling

Linear Programming

The Transportation Models

Simulation

Learning Curves

Decision-Making Tools

Filters

In waiting line systems,a _ level of service means ___ waiting time costs because of reductions in customer dissatisfaction.

In , structure,the customer joins a single waiting line but receives service in multiple phases.