Question 1

Use the scenario given below to answer the following question.
Consider the flow process map given below.Assume that orders enter the system with a time between arrivals that is exponentially distributed with a mean of 0.8 minutes.The processing time at work station 1 is exponential with a mean of 0.50 minutes,and at work station 2,it is exponential with a mean of 1 minute.The queue for work station 1 has a capacity of 6,while the queue for work station 2 has a capacity of 4.
Run the simulations for 30 replications of a 24-hour. 
-Identify the average number of customers in queue 1.

Accepted Answer

A)  3.39
B)  0.42
C)  2.87
D)  3.46 A

Question 2

Use the data given below to answer the following question(s).
Customers arrive at an airline ticket counter at the rate of three customers per minute and can be served at the rate of 4 customers per minute.
-Given: μ = 8 customers/minute and λ = 4 customers/minute.
Compute the expected number of customers in service.

Accepted Answer

Expected number of customers in service = λ/μ = 4/8 = 1/2 = 0.5 customers

Question 3

In queuing theory,Little's law states that the ________.

Accepted Answer

A)  average number of customers in a system is equal to the sum of the average time in the queue and the average time in the system
B)  average number of customers in a system is equal to the difference of the average time in the queue and the average time in the system
C)  average number of customers in a system is equal to the mean arrival rate times the average time in the system
D)  average number of customers is equal to the ratio of the mean arrival rate over the average time in the system C

Question 4

If the servicing rate increases to 16,the ________.

Accepted Answer

A)  average number of customers in the system decreases by 1.8
B)  average number of customers in the queue increases by 1.7
C)  probability of the system being empty will reduce to 0.75
D)  probability that the system contains at least one customer will increase to 0.25

Question 5

Based on the simulation results,determine the average number of customers in the system.

Accepted Answer

A)  18.95
B)  23.28
C)  35.23
D)  11.85

Question 6

If the average waiting time for a customer in a system is 30 minutes and the customer service rate is 5 customers per minute,the average time a customer spends in the queue is ________.

Accepted Answer

A)  35 minutes 48 seconds
B)  25 minutes
C)  29 minutes 48 seconds
D)  30 minutes

Question 7

The mean time that an object spends in the waiting line is ________.

Accepted Answer

A)  21.53 minutes
B)  60.33 minutes
C)  0.95 minutes
D)  35.19 minutes

Question 8

A queue may not even be visible or in one location.

Accepted Answer

A) True 
 B)False

Question 9

Use the case given below to answer the following question(s).
Reuben went to a diner to have a hamburger and French fries.The person at the cash counter assigned the number 27 to Reuben and told him he would have to wait for his turn.
-Which of the following,if true,would suggest that Reuben reneged?

Accepted Answer

A)  He chose the counter with the least number of customers to place his order.
B)  He canceled his order and decided to find another food joint where he would not have to wait long.
C)  He exchanged his turn with an old gentleman after him who had been assigned the waiting number 28.
D)  He tried to exchange his turn with a lady who would be serviced ahead of him,citing a personal emergency.

Question 10

Use the data given below to answer the following question(s).
In an FCFS single server queuing discipline,the mean arrival rate is 12 customers/minute and the mean service rate is 14.5 customers/minute.
-What is the average number of customers in the system?

Accepted Answer

A)  0.17
B)  0.40
C)  4.80
D)  3.97

Question 11

The inventory remaining at the end of the simulation is ________.

Accepted Answer

A)  37.80
B)  60.33
C)  0.95
D)  21.53

Question 12

What is the expected number of customers in service?

Accepted Answer

A)  0.40
B)  0.60
C)  0.17
D)  0.83

Question 13

In SimQuick,service level is defined as the ________.

Accepted Answer

A)  mean time an object spends in the buffer
B)  number of objects in the buffer
C)  fraction of time that the work station was waiting to pass an object on to the next element
D)  percentage of objects entering the process divided by the total number that tried to enter

Question 14

Use the data given below to answer the following question(s).
Customers arrive at an airline ticket counter at the rate of three customers per minute and can be served at the rate of 4 customers per minute.
-Customers arrive at an airline ticket counter at a rate of 3 customers per minute and can be served at a rate of 2 customers per minute.At the counter there is a queue with 10 customers in it.What are the steps involved in computing the average number of customers in the system?

Accepted Answer

The answer of Use the data given below to answer...

Question 15

If the average number of customers in a queue is 9.6,the number of customers in the system is 10,and the arrival rate is 2 customers per minute,what is the probability that at least one customer is in the system?

Accepted Answer

A)  0.8
B)  0.2
C)  0.6
D)  0.4

Question 16

If the servicing rate falls to 11,which of the following will occur?

Accepted Answer

A)  The average service time will increase by 60 seconds.
B)  The number of customers in the system will reduce to one.
C)  The length of the queue will become infinitely long.
D)  The average time that a customer has to spend in the queue will increase by 120 seconds.

Question 17

Use the data given below to answer the following question(s).
Customers arrive at an airline ticket counter at the rate of three customers per minute and can be served at the rate of 4 customers per minute.
-Show the steps required to calculate the average number of customers in the queue.

Accepted Answer

The answer of Use the data given below to answer...

Question 18

Identify the formula that is used to determine the average time a customer spends in the system (W).

Accepted Answer

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Question 19

If the average arrival rate increases to 14,what is the probability that the system is empty?

Accepted Answer

A)  0.034
B)  0.34
C)  0.057
D)  0.57

Question 20

If the average number of customers in a queue is 9.6,the number of customers in the system is 10,and the arrival rate is 2 customers per minute,what is the probability that the system is empty?

Accepted Answer