 |
| 1 | |
Which of the following is a way of dealing with a validation problem when the computer simulation yields results that you suspect are incorrect? |
| | A) | Run the computer program again with more or fewer iterations. |
| | B) | Simulate present conditions and compare results with the existing system |
| | C) | Approach the problem with a mathematical model instead |
| | D) | Use a different simulation model to try to verify the mistakes |
| | E) | Adjust the parameters of the simulation until you get the results you expected |
|
|
|
| 2 | |
Which of the following is not one of the desirable features of simulation software listed in the textbook? |
| | A) | Being capable of being used interactively |
| | B) | Being a complete and accurate model of reality |
| | C) | Having building blocks with built-in commands |
| | D) | Allow modules to be built and then connected |
| | E) | Allow users to write and incorporate their own routines |
|
|
|
| 3 | |
Which of the following are viewed as advantages of simulation in operations management decision making? |
| | A) | A simulation can be used in training courses as though it were a game |
| | B) | A significant amount of computer time can be utilized running simulations |
| | C) | The technique of simulation requires innovation as it lacks a standardized approach |
| | D) | Simulation may be equally precise but less accurate than a mathematical analysis |
| | E) | Simulations are virtually guaranteed to provide good answers if enough time is spent on developing them. |
|
|
|
| 4 | |
In a simulation study, after defining the problem and constructing the simulation model, the immediate next major phase of the study is which of the following? |
| | A) | Run the simulation |
| | B) | Specify values of variables and parameters |
| | C) | Evaluate results |
| | D) | Validation |
| | E) | Propose a new experiment |
|
|
|
| 5 | |
Determining starting conditions is a major tactical decision in simulation analysis. Which of the following is a way to cope with this problem? |
| | A) | Discard data generated during the early parts of a run |
| | B) | Select starting conditions that you know are realistic |
| | C) | Select starting conditions randomly |
| | D) | Measure the actual values of the system you are trying to simulate |
| | E) | Use stochastic heuristics as starting conditions |
|
|
|
| 6 | |
In modeling a simulation random numbers from 00 to 99 are assigned with the intervals determined from frequency distributions for each behavior occurrence. If there are two behaviors, X and Y, out of 50 tallies, on behavior X you record 20 tallies and on behavior Y you record 30 tallies. Which of the following is a correct random number interval for behavior X? |
| | A) | 00 to 19 |
| | B) | 01 to 20 |
| | C) | 00 to 39 |
| | D) | 41 to 61 |
| | E) | 45 to 100 |
|
|
|
| 7 | |
In the context of a simulation study, which of the following refers to testing the computer simulation program to ensure that the simulation is correct? |
| | A) | Validation |
| | B) | Confirmation |
| | C) | Substantiation |
| | D) | Calibration |
| | E) | Checking |
|
|
|
| 8 | |
A small vendor has either a good day of sales with an average of $1,000 or a bad day with an average of only $500 for the day. To simulate these outcomes, random numbers from 00 to 99 should be assigned with the intervals determined from the frequency distribution. If, during the last 100 days, the vendor had 27 good days and 73 bad days, which of the following is a correct random number interval for a bad day? |
| | A) | 28 to 99 |
| | B) | 27 to 73 |
| | C) | 27 to 100 |
| | D) | 27 to 99 |
| | E) | 00 to 26 |
|
|
|
| 9 | |
On a good day, Joe will sell an average of $50,000 of product. On a medium day he will sell $25,000, and on a bad day he will sell only $10,000. Suppose you observe Joe's business for 100 days and, during that time, he had 15 good days, 40 medium days, and 45 bad days. If you draw a random number to represent his sales for the first simulated day and that number were 47, what kind of simulated day did Joe's business have? (Note: arrange the random number interval probability distribution so it starts with a good day at 00 followed by a medium day, etc.). |
| | A) | A good day |
| | B) | A medium day |
| | C) | A bad day |
| | D) | Can not be determined |
| | E) | Between medium and bad |
|
|
|
| 10 | |
On a good day a distributor will have $5,000 of inventory sales; on a medium day sales of $3,000; on a bad day only $1,000. Suppose you have data on this distributor's sales for the past 100 days and that she had 25 good days, 50 medium days, and 25 bad days. If you draw a random number to represent her sales for the first simulated day and that number were 89, which of the following were her simulated sales? (Note: arrange the random number interval probability distribution so it starts with a good day at 00 followed by a medium day, etc.) |
| | A) | $5,000 |
| | B) | $3,000 |
| | C) | $2,500 |
| | D) | $1,000 |
| | E) | Can not be determined |
|
|
.