Exam 22: Supplement E Simulation

Using a simulation model to gather a year of operating data in a few minutes is known as:

What is meant by time compression in a simulation model?

SimQuick is to be used to simulate the following bank process: Customers arrive at the Entrance Door of the bank with an average time between arrivals of 2.5 minutes. The Line Buffer holds 6 customers. If a customer arrives and the buffer line is filled, the customer leaves. The Work Station Teller's processing time per customer is normally distributed, with a mean of 3.0 minutes and a standard deviation of 0.5 minutes. The Served Customer Buffer in the flowchart is used to count the number of customers processed during the simulation period. A 2-hour period is to be simulated and the simulation should be repeated 30 times. Determine: a) The number of customers served during the 2-hour period; b) The percentage of customers who arrived at the bank and left because the buffer line was full; c) The utilization of the teller (% of time working) during the 2-hour period;

Which of the following statements about SimQuick is True?

To generate 100 random numbers in an Excel simulation, the "=RAND()" function is first typed into the A1 cell on an Excel spreadsheet. A1 can then be copied and pasted in a rectangular area on the spreadsheet to cover the cells:

________ occurs when the simulation is repeated over enough time that the average results for performance measures remain constant.

The manager of a branch bank wants to build a simulation model of the lobby operation to reduce the waiting time of her customers. The number of tellers is an example of:

________ are random events that the decision maker cannot control.

Any random number has the same likelihood of being selected as any other, regardless of how recently it has been selected.

A simulation model is used to test the impact of the number of sample customers at a supermarket. As the model is run, the decision maker watches the average number of customers in the store rapidly increase from zero until it levels off and holds a constant value. The simulation model is:

What are the motivations for using simulation for analyzing processes?

Monte Carlo simulation is the use of computer graphics to show customers or products moving through a series of process steps.

Scenario E.1 SimQuick is being used to simulate the following bank process: Customer arrivals at the Entrance Door of the bank with an average time between arrivals of 2.5 minutes. The Line Buffer holds 6 customers. If a customer arrives and the buffer line is filled, the customer leaves. The Work Station Teller's processing time per customer is normally distributed, with a mean of 3.0 minutes and a standard deviation of 0.5 minutes. The Served Customer Buffer in the flow chart is used to count the number of customers processed during the period simulated. A 2-hour period was simulated. The SimQuick simulation is run, and the results are as follows: -Use the information in Scenario E.1. Approximately how much time did the average customer who entered the system spend waiting in line?

To generate 80 random numbers in an Excel simulation, the "=RAND()" function is first typed into the C2 cell on an Excel spreadsheet. C2 is then copied and pasted in a rectangular area on the spreadsheet to cover the cells:

Which one of the following relationships is correct?

Time compression is the feature of simulation that allows managers to obtain operating-characteristic estimates in much less time than is required to gather the same operating data from a real system.

Simulation is the process of reproducing the behavior of a system using a model that describes the processes of the system.

Scenario E.1 SimQuick is being used to simulate the following bank process: Customer arrivals at the Entrance Door of the bank with an average time between arrivals of 2.5 minutes. The Line Buffer holds 6 customers. If a customer arrives and the buffer line is filled, the customer leaves. The Work Station Teller's processing time per customer is normally distributed, with a mean of 3.0 minutes and a standard deviation of 0.5 minutes. The Served Customer Buffer in the flow chart is used to count the number of customers processed during the period simulated. A 2-hour period was simulated. The SimQuick simulation is run, and the results are as follows: -Use the information in Scenario E.1. Approximately how many total customers arrived during the 2-hour period simulated?

One hundred monkeys are typing in Excel spreadsheets when one of them enters =NORM.S.INV(RAND()) What is the result of this monkey's function?

Refer to the bank process model. The Marketing Department for the bank has decided to run a special promotion for new customers that will increase the number of customers arriving at the bank. The new arrival rate is expected to be an average time between arrivals of 2.0 minutes instead of the current average time between arrivals of 2.5 minutes. With the potential increase in business, the bank manager is concerned about the number of customers who will arrive and leave because the line is full (with 6 customers) and the average wait time in line at the bank. All other parameters of the model remain the same. Using SimQuick, estimate the new arrive and immediately leave rate and average time in line. Should the manager be concerned?