ISYE 6644 |QUESTIONS & ANSWERS VERIFIED SOLUTIONS
100%|GRADE A+|LATEST 2024/2025
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 - ✔✔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.). - ✔✔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! - ✔✔TRUE
Arena has a built-in Input Analyzer tool that allows for the fitting of certain
distributions to data. - ✔✔TRUE
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. -
✔✔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. - ✔✔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. - ✔✔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. - ✔✔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
(e) Lower confidence in your selection - ✔✔b
In Arena, you can use a single DECIDE module to route customers to that one of
four servers having the smallest queue. - ✔✔TRUE
TRUE or FALSE? In Arena, you can use the expression EXPO(3) to generate
exponential interarrival times having a mean of 1/3. - ✔✔FALSE. The mean of an
EXPO(3) is 3.
TRUE or FALSE? In Arena, an alternative expression to generate exponential
interarrival times having a mean of 1/3 is -(1/3)*LN(UNIF(0,1)) - ✔✔TRUE. This
is the Inverse Transform Method to generate an observation coming from Exp(λ =
3).
TRUE or FALSE? In Arena, it is possible to set the maximum capacity of a queue
from within a SEIZE module. - ✔✔FALSE. It is only possible to set a maximum
queue capacity from within a QUEUE block found in the Blocks template. 2
100%|GRADE A+|LATEST 2024/2025
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 - ✔✔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.). - ✔✔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! - ✔✔TRUE
Arena has a built-in Input Analyzer tool that allows for the fitting of certain
distributions to data. - ✔✔TRUE
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. -
✔✔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. - ✔✔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. - ✔✔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. - ✔✔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
(e) Lower confidence in your selection - ✔✔b
In Arena, you can use a single DECIDE module to route customers to that one of
four servers having the smallest queue. - ✔✔TRUE
TRUE or FALSE? In Arena, you can use the expression EXPO(3) to generate
exponential interarrival times having a mean of 1/3. - ✔✔FALSE. The mean of an
EXPO(3) is 3.
TRUE or FALSE? In Arena, an alternative expression to generate exponential
interarrival times having a mean of 1/3 is -(1/3)*LN(UNIF(0,1)) - ✔✔TRUE. This
is the Inverse Transform Method to generate an observation coming from Exp(λ =
3).
TRUE or FALSE? In Arena, it is possible to set the maximum capacity of a queue
from within a SEIZE module. - ✔✔FALSE. It is only possible to set a maximum
queue capacity from within a QUEUE block found in the Blocks template. 2
