1
ISYE 6644 - FinalExam Questions with Answers (100%
Correct Answers)
If f(x, y) = cxy for all 0 < x < 1 and 1 < y < 2, where c is whatever value makes this thing
integrate to 1, then X and Y are independent random variables —ANS: TRUE.
(Because f(x, y) = a(x)b(y) factors nicely, and there are no funny limits.)
In our Arena Call Center example, it was possible for entities to be left in the system
when it shut down at 7:00 p.m. (even though we stopped allowing customers to enter
the system at 6:00 p.m.). —ANS: TRUE — because of the small chance that a callback
will occur.
An entity can be scheduled to visit the same resource twice, with different service time
distributions on the two visits! —ANS: TRUE
Arena has a built-in Input Analyzer tool that allows for the fitting of certain
distributions to data. —ANS: TRUE
© 2025 All rights reserved
, 2
The Kolmogorov-Smirnov test can be used both to see (i) if data seem to fit to a
particular hypothesized distribution and (ii) if the data are independent. —ANS:
FALSE. (It's just a goodness-of-fit test.)
Welch's method is a graphical technique to estimate truncation (initialization bias)
points for steady-state simulation. —ANS: TRUE
If you are using a ranking-and-selection procedure and two competitors happen to fall
within the indifference-zone, then you don't really care too much which one you end
up selecting. —ANS: TRUE. That's why it's called the IZ!
TRUE or FALSE? Sequential ranking-and-selection procedures are designed to stop
early if one alternative seems to be way out in front of the others. —ANS: TRUE
Suppose, when designing a ranking-and-selection procedure, you have decided to
increase the desired probability of correct selection compared to a previous run of the
procedure. What can you expect? (a) Sample sizes that are about the same
(b) Larger sample sizes
(c) Somewhat lower achieved Pr(CS)
(d) A larger indifference zone
© 2025 All rights reserved
ISYE 6644 - FinalExam Questions with Answers (100%
Correct Answers)
If f(x, y) = cxy for all 0 < x < 1 and 1 < y < 2, where c is whatever value makes this thing
integrate to 1, then X and Y are independent random variables —ANS: TRUE.
(Because f(x, y) = a(x)b(y) factors nicely, and there are no funny limits.)
In our Arena Call Center example, it was possible for entities to be left in the system
when it shut down at 7:00 p.m. (even though we stopped allowing customers to enter
the system at 6:00 p.m.). —ANS: TRUE — because of the small chance that a callback
will occur.
An entity can be scheduled to visit the same resource twice, with different service time
distributions on the two visits! —ANS: TRUE
Arena has a built-in Input Analyzer tool that allows for the fitting of certain
distributions to data. —ANS: TRUE
© 2025 All rights reserved
, 2
The Kolmogorov-Smirnov test can be used both to see (i) if data seem to fit to a
particular hypothesized distribution and (ii) if the data are independent. —ANS:
FALSE. (It's just a goodness-of-fit test.)
Welch's method is a graphical technique to estimate truncation (initialization bias)
points for steady-state simulation. —ANS: TRUE
If you are using a ranking-and-selection procedure and two competitors happen to fall
within the indifference-zone, then you don't really care too much which one you end
up selecting. —ANS: TRUE. That's why it's called the IZ!
TRUE or FALSE? Sequential ranking-and-selection procedures are designed to stop
early if one alternative seems to be way out in front of the others. —ANS: TRUE
Suppose, when designing a ranking-and-selection procedure, you have decided to
increase the desired probability of correct selection compared to a previous run of the
procedure. What can you expect? (a) Sample sizes that are about the same
(b) Larger sample sizes
(c) Somewhat lower achieved Pr(CS)
(d) A larger indifference zone
© 2025 All rights reserved
