ISYE 6644 OH EXAM PREP TEST BANK
VERIFIED QUESTIONS AND CORRECT
ANSWERS
●● 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.).
Answer: 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!
Answer: TRUE
●● Arena has a built-in Input Analyzer tool that allows for the fitting of
certain distributions to data.
Answer: 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.
Answer: 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.
Answer: 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.
Answer: 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.
Answer: 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
Answer: b
VERIFIED QUESTIONS AND CORRECT
ANSWERS
●● 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.).
Answer: 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!
Answer: TRUE
●● Arena has a built-in Input Analyzer tool that allows for the fitting of
certain distributions to data.
Answer: 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.
Answer: 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.
Answer: 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.
Answer: 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.
Answer: 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
Answer: b
