Question 1

The effect of the Excel formula =20∗RAND()is that:

Accepted Answer

A) twenty entries of a random variable with a mean of zero will be created. 
B) twenty entries of a random variable with a mean of one will be created. 
C) one entry of a random variable with a mean of twenty will be created. 
D) one entry of a random variable with a mean of ten will be created.

Question 2

One approach to mathematical simulation that can be calculated in an Excel spreadsheet is ________.

Accepted Answer

The answer of One approach to mathematical simulation that can...

Question 3

The department chair is out of town at a conference and you,as the assistant department chair,find yourself besieged by dozens of students needing permission to get into a very popular (but closed)class.Student arrivals are governed by the Poisson distribution with a mean of 10 minutes.Telling the students that they can't get into the closed class takes about 5 minutes,and this average is exponentially distributed.About how long do students wait outside your office door?

Accepted Answer

A) 0.083 minutes 
B) 0.083 hours 
C) 0.50 minutes 
D) 0.50 hours

Question 4

The bank manager of a busy downtown location found herself unable to find good teller help so she invested in an ATM to handle the routine withdrawals that tended to occupy an inordinate amount of the teller's time.Before she installed the ATM she found that customers were arriving on average every 2 minutes (Poisson distributed)and it took a teller 30 seconds (exponentially distributed)to process their request.The ATM is able to maintain a constant 30 second service time.What is the impact on the number of customers waiting in line?

Accepted Answer

A) There is no change. 
B) The ATM line is half as long as the teller line. 
C) The ATM line is twice as long as the teller line. 
D) The ATM line is 25% shorter than the teller line.

Question 5

With only a half hour for lunch I screamed into the parking lot of the nearest Golden Arches Supper Club at 40 miles an hour.When I saw the drive through line was 15 cars deep I didn't bother getting in line;I was off to visit the Colonel.This behavior might be described as balking.

Accepted Answer

A) True 
 B)False

Question 6

The term time compression refers to the phenomenon that a server tends to speed up the service process if the waiting line exceeds some critical number of customers.

Accepted Answer

A) True 
 B)False

Question 7

Everything about two different waiting line systems is the same except one system has a constant service time and the other has a Poisson distributed service time.Customers using the system with the constant service time will have half the waiting time of the customers using the system with Poisson distributed service times.

Accepted Answer

A) True 
 B)False

Question 8

A process is ________ if the outcome of one trial does not have any impact on the next trial.

Accepted Answer

The answer of A process is ________ if the outcome...

Question 9

What is Monte Carlo simulation and how is one conducted?

Accepted Answer

The answer of What is Monte Carlo simulation and how...

Question 10

Monte Carlo simulation uses statistical sampling to create outcomes for a large number of trials.

Accepted Answer

A) True 
 B)False

Question 11

The department chair is out of town at a conference and you,as the assistant department chair,find yourself besieged by dozens of students needing permission to get into a very popular (but closed)class.Student arrivals are governed by the Poisson distribution with a mean of 5 minutes.Telling the students that they can't get into the closed class takes about 3 minutes,and this average is exponentially distributed.About how many students are waiting outside your office door and in your office?

Accepted Answer

A) 0.5 
B) 1.0 
C) 1.5 
D) 2.0

Question 12

One assumption in most waiting line analyses is that the number of customers is ________.

Accepted Answer

The answer of One assumption in most waiting line analyses...

Question 13

Customer arrivals at a dry cleaning service occur randomly throughout the day.The distribution that is usually used to model the interval between arrivals is the:

Accepted Answer

A) Poisson distribution. 
B) uniform distribution. 
C) random distribution. 
D) normal distribution.

Question 14

A customer enters a business and joins the one line that snakes back and forth through the lobby in order to receive service.The initial part of the service is performed by one customer service representative,after which the customer enters a second,shorter line to complete the service before leaving the establishment.Which description of this waiting line system is appropriate?

Accepted Answer

A) single channel,single phase 
B) single channel,multiple phase 
C) multiple channel,single phase 
D) multiple channel,multiple phase

Question 15

All waiting line formulas assume that customers are served on a first-come first-served (FCFS)basis.

Accepted Answer

A) True 
 B)False

Question 16

Why would someone choose to use simulation to analyze a waiting line problem rather than use a formula? What are the advantages and disadvantages of a simulation approach?

Accepted Answer

The answer of Why would someone choose to use simulation...

Question 17

Customers that leave the system after waiting in line for a while are ________,but customers that don't even join the line because it looks too long are ________.

Accepted Answer

The answer of Customers that leave the system after waiting...

Question 18

Barber College is the best deal in town! For only $5,you can get a shampoo and cut by any one of four untrained stylists completed in 7.5 minutes on average.Perhaps this is why customers show up on average two minutes apart (both interarrival times and service times are exponentially distributed).
-What percentage of the time are the four stylists working with customers?

Accepted Answer

A) 94% 
B) 90% 
C) 84% 
D) 80%

Question 19

Which of the following statements about simulation is BEST?

Accepted Answer

A) Tools like linear programming and regression analysis work best when they are simulated. 
B) Simulation permits managers to test the effects of new policies and procedures without disrupting customer service. 
C) As computers have increased in power,simulation results have become less accurate. 
D) Computer-based simulation is the only "true" simulation.

Question 20

The department chair is out of town at a conference and you,as the assistant department chair,find yourself besieged by dozens of students needing permission to get into a very popular (but closed)class.Student arrivals are governed by the Poisson distribution with a mean of 5 minutes.Telling the students that they can't get into the closed class takes about 3 minutes,and this average is exponentially distributed.About how long does it take a student to wait in line and receive your valuable service?

Accepted Answer

A) 0.125 minutes 
B) 0.075 hours 
C) 4.5 minutes 
D) 7.5 minutes

Exam 7: S Advanced Waiting Line Theory and Simulation Modeling

The effect of the Excel formula =20∗RAND() is that:

One approach to mathematical simulation that can be calculated in an Excel spreadsheet is ________.

With only a half hour for lunch I screamed into the parking lot of the nearest Golden Arches Supper Club at 40 miles an hour.When I saw the drive through line was 15 cars deep I didn't bother getting in line;I was off to visit the Colonel.This behavior might be described as balking.

The term time compression refers to the phenomenon that a server tends to speed up the service process if the waiting line exceeds some critical number of customers.

A process is ________ if the outcome of one trial does not have any impact on the next trial.

What is Monte Carlo simulation and how is one conducted?

Monte Carlo simulation uses statistical sampling to create outcomes for a large number of trials.

One assumption in most waiting line analyses is that the number of customers is ________.

Customer arrivals at a dry cleaning service occur randomly throughout the day.The distribution that is usually used to model the interval between arrivals is the:

All waiting line formulas assume that customers are served on a first-come first-served (FCFS)basis.

Why would someone choose to use simulation to analyze a waiting line problem rather than use a formula? What are the advantages and disadvantages of a simulation approach?

Customers that leave the system after waiting in line for a while are ,but customers that don't even join the line because it looks too long are .

Which of the following statements about simulation is BEST?