ISYE 6644 Midterm Test 1
Due Mar 7 at 11:59pm
Points 100
Questions 34
Available Feb 26 at 8am - Mar 7 at 11:59pm 10 days
Time Limit 120 Minutes
Instructions
This test is 120 minutes. You’re allowed one cheat sheet (both sides).
All questions are 3 points, except number 34, which is 1 point.
Good luck! I want you to make this test wish that it had never been born!!
This quiz was locked Mar 7 at 11:59pm.
Attempt History
Attempt Time Score
LATEST Attempt 1 111 minutes 100 out of 100
,Score for this quiz: 100 out of 100
Submitted Mar 7 at 10:51am
This attempt took 111 minutes.
Question 1
pts
True or False ? Discrete-event simulations are particularly suitable for
analyzing continuous-flow phenomena such as the velocity and altitude of
an aircraft as it comes in for a landing.
True
False
Question 2
pts
Consider a single-server queue simulation with i.i.d. exponential
interarrivals, i.i.d. exponential services, and a first-in-first-out service
discipline. Suppose that the arrival rate is 5 per hour, and the service rate is
4 per hour. What will happen in the long run?
(a) The server will be busy about 20% of the time.
(b) The server will be busy all of the time.
(c) The number of custmers in the system (line + in service) will never exceed 9.
(d) The length of the line will never exceed 5.
, (e) The average number of people in the queue will converge to around 4.
Question 3
pts
If the covariance of X and Y is 1/2, then X and Y cannot be independent.
True
False
Question 4
pts
The planet Glubnor has 120-day years. Suppose there are four
Glubnorians in the room. What is the probability that at least two of them
share the same birthday?
0.015
0.025
0.049
0.149
0.975
Due Mar 7 at 11:59pm
Points 100
Questions 34
Available Feb 26 at 8am - Mar 7 at 11:59pm 10 days
Time Limit 120 Minutes
Instructions
This test is 120 minutes. You’re allowed one cheat sheet (both sides).
All questions are 3 points, except number 34, which is 1 point.
Good luck! I want you to make this test wish that it had never been born!!
This quiz was locked Mar 7 at 11:59pm.
Attempt History
Attempt Time Score
LATEST Attempt 1 111 minutes 100 out of 100
,Score for this quiz: 100 out of 100
Submitted Mar 7 at 10:51am
This attempt took 111 minutes.
Question 1
pts
True or False ? Discrete-event simulations are particularly suitable for
analyzing continuous-flow phenomena such as the velocity and altitude of
an aircraft as it comes in for a landing.
True
False
Question 2
pts
Consider a single-server queue simulation with i.i.d. exponential
interarrivals, i.i.d. exponential services, and a first-in-first-out service
discipline. Suppose that the arrival rate is 5 per hour, and the service rate is
4 per hour. What will happen in the long run?
(a) The server will be busy about 20% of the time.
(b) The server will be busy all of the time.
(c) The number of custmers in the system (line + in service) will never exceed 9.
(d) The length of the line will never exceed 5.
, (e) The average number of people in the queue will converge to around 4.
Question 3
pts
If the covariance of X and Y is 1/2, then X and Y cannot be independent.
True
False
Question 4
pts
The planet Glubnor has 120-day years. Suppose there are four
Glubnorians in the room. What is the probability that at least two of them
share the same birthday?
0.015
0.025
0.049
0.149
0.975
