Question 1

Simulation is used for several reasons,including which of the following?

Accepted Answer

A) Model development is a fast process. 
B) The models can usually be solved by hand. 
C) The models are usually simple. 
D) It can handle large and complex real-world problems. 
E) It always generates optimal solutions. 
A) Model development is a fast process. 
B) The models can usually be solved by hand. 
C) The models are usually simple. 
D) It can handle large and complex real-world problems. 
E) It always generates optimal solutions. D

Question 2

Despite the powerful simulation software available today,good simulation models can take a long time to develop.

Accepted Answer

A) True 
 B)False  True

Question 3

Results of simulation experiments with large numbers of trials or long experimental runs will generally be better than those with fewer trials or shorter experimental runs.

Accepted Answer

A) True 
 B)False  True

Question 4

A simulation model is designed to arrive at a single specific numerical answer to a given problem.

Accepted Answer

A) True 
 B)False

Question 5

What is the Monte Carlo method?

Accepted Answer

The Monte Carlo method is a si

Question 6

The number of tires sold at a car garage varies randomly between 0 and 4 each hour,with equally probability for each possible outcome.What set of random numbers (on the 01-100 scale)would tire sales of 2 be assigned?

Accepted Answer

A) 01 through 20 
B) 21 through 40 
C) 41 through 60 
D) 51 through 75 
E) 26 through 50 
A) 01 through 20 
B) 21 through 40 
C) 41 through 60 
D) 51 through 75 
E) 26 through 50

Question 7

One of the advantages of simulation is that:

Accepted Answer

A) real-world complications can be included that most OM models cannot permit. 
B) it always generates a more accurate solution than a mathematical model does. 
C) it is a repetitive approach that may produce different solutions in repeated runs. 
D) model development is less time consuming than for mathematical models. 
E) model solutions are transferable to a wide variety of problems. 
A) real-world complications can be included that most OM models cannot permit. 
B) it always generates a more accurate solution than a mathematical model does. 
C) it is a repetitive approach that may produce different solutions in repeated runs. 
D) model development is less time consuming than for mathematical models. 
E) model solutions are transferable to a wide variety of problems.

Question 8

"Time compression" and the ability to pose "what-if?" questions are elements of:

Accepted Answer

A) setting up a probability distribution for important variables. 
B) the disadvantages of simulation. 
C) physical simulations but not mathematical simulations. 
D) the advantages of simulation. 
E) the broad threefold idea of simulation. 
A) setting up a probability distribution for important variables. 
B) the disadvantages of simulation. 
C) physical simulations but not mathematical simulations. 
D) the advantages of simulation. 
E) the broad threefold idea of simulation.

Question 9

A distribution of lead times in an inventory problem indicates that lead time was 1 day 20 percent of the time,2 days 30 percent of the time,3 days 30 percent of the time,and 4 days 20 percent of the time.This distribution has been prepared for Monte Carlo analysis.The first four random numbers drawn are 06,63,57,and 02.What is the average lead time of this simulation?

Accepted Answer

A) 1.75 days 
B) 2 days 
C) 3 days 
D) 3.5 days 
E) 8 days 
A) 1.75 days 
B) 2 days 
C) 3 days 
D) 3.5 days 
E) 8 days

Question 10

State the three-fold idea behind simulation.

Accepted Answer

(1)to imitate a real-world situation mat

Question 11

Explain the difference between random numbers and random number intervals.

Accepted Answer

Random numbers are a series of digits th

Question 12

Which of the following is TRUE regarding the use of simulation?

Accepted Answer

A) It is always very easy to build a simulation model. 
B) It may interfere with real-world systems. 
C) It always yields optimal solutions. 
D) It allows time-compression in testing major policy decisions. 
E) Few constraints,if any,have to be considered. 
A) It is always very easy to build a simulation model. 
B) It may interfere with real-world systems. 
C) It always yields optimal solutions. 
D) It allows time-compression in testing major policy decisions. 
E) Few constraints,if any,have to be considered.

Question 13

The Las Vegas method is a simulation technique that uses random elements when chance exists in their behavior.

Accepted Answer

A) True 
 B)False

Question 14

Explain what is meant by the concept of "time compression" in simulation modeling.

Accepted Answer

The effects of OM policies ove

Question 15

Simulation is the attempt to duplicate the features,appearance,and characteristics of a real system,usually by means of a computerized model.

Accepted Answer

A) True 
 B)False

Question 16

The numbers used to represent each possible value or outcome in a computer simulation are referred to as ________.

Accepted Answer

random-num

Question 17

From a portion of a probability distribution,you read that P(demand = 0)is 0.25,and P(demand = 1)is 0.30.What are the random number intervals for this distribution beginning with 01?

Accepted Answer

A) 01 through 25,and 26 through 30 
B) 01 through 25,and 01 through 30 
C) 01 through 25,and 26 through 55 
D) 00 through 25,and 26 through 55 
E) 00 through 25,and 26 through 30 
A) 01 through 25,and 26 through 30 
B) 01 through 25,and 01 through 30 
C) 01 through 25,and 26 through 55 
D) 00 through 25,and 26 through 55 
E) 00 through 25,and 26 through 30

Question 18

In most real-world inventory problems,lead time and demand vary in ways that make simulation a necessity because mathematical modeling is extremely difficult.

Accepted Answer

A) True 
 B)False

Question 19

Sam's hardware store has an order policy of ordering 12 gallons of a specific primer whenever 7 gallons are on hand (unless there's already an ordered delivery due).The store would like to see how well their policy works.Assume that beginning inventory in period 1 is 10 gallons and that orders are placed at the end of the week to be received one week later.(In other words,if an order is placed at the end of week one,it is available at the beginning of week 3. )Assume that if inventory is not on hand,it will result in a lost sale.The weekly demand distribution obtained from past sales is found in the table below.Also,use the random numbers that are provided and simulate 10 weeks' worth of sales.How many sales are lost?
   Random numbers for sales: 37,60,79,21,85,71,48,39,31,35

Accepted Answer

@#IMG-DLM& @#IMG-DLM& Over the 10 weeks

Question 20

A distribution of service times at a waiting line indicates that service takes 6 minutes 30 percent of the time,7 minutes 40 percent of the time,8 minutes 20 percent of the time,and 9 minutes 10 percent of the time.In preparing this distribution for Monte Carlo analysis,the service time of 8 minutes would be represented by what random number range?

Accepted Answer

A) 20 through 40 
B) 21 through 40 
C) 70 through 90 
D) 71 through 90 
E) 01 through 20 
A) 20 through 40 
B) 21 through 40 
C) 70 through 90 
D) 71 through 90 
E) 01 through 20

Exam 27: Modeling with Simulation

Simulation is used for several reasons,including which of the following?

Despite the powerful simulation software available today,good simulation models can take a long time to develop.

Results of simulation experiments with large numbers of trials or long experimental runs will generally be better than those with fewer trials or shorter experimental runs.

A simulation model is designed to arrive at a single specific numerical answer to a given problem.

What is the Monte Carlo method?

The number of tires sold at a car garage varies randomly between 0 and 4 each hour,with equally probability for each possible outcome.What set of random numbers (on the 01-100 scale)would tire sales of 2 be assigned?

One of the advantages of simulation is that:

"Time compression" and the ability to pose "what-if?" questions are elements of:

State the three-fold idea behind simulation.

Explain the difference between random numbers and random number intervals.

Which of the following is TRUE regarding the use of simulation?

The Las Vegas method is a simulation technique that uses random elements when chance exists in their behavior.

Explain what is meant by the concept of "time compression" in simulation modeling.

Simulation is the attempt to duplicate the features,appearance,and characteristics of a real system,usually by means of a computerized model.

The numbers used to represent each possible value or outcome in a computer simulation are referred to as ________.

From a portion of a probability distribution,you read that P(demand = 0)is 0.25,and P(demand = 1)is 0.30.What are the random number intervals for this distribution beginning with 01?

In most real-world inventory problems,lead time and demand vary in ways that make simulation a necessity because mathematical modeling is extremely difficult.

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