1) Model variables can be controllable or uncontrollable.
2) Since the production mix linear program applications are a special situation, the
number of decision variables is limited to two.
3) In PERT, the variance in completion time is equal to the variance of the most time
consuming activity on the critical path.
4) An x-bar chart would be appropriate to monitor the number of defects in a production
lot.
5) The multiple regression model includes several dependent variables.
6) Both PERT and CPM networks show activities and activity sequences.
7) Dominance increases the size of games by allowing additional strategies to be
considered.
8) The joint probability of two or more independent events occurring is the sum of their
marginal or simple probabilities.
9) While it is powerful, simulation is not considered to be a flexible quantitative
analysis tool.
10) All problems can be solved by considering only the quantitative issues.
11) Which of the following is not considered one of the steps to developing the
decomposition method?
A) compute seasonal indices using CMAs
B) deseasonalize the data by dividing each number by its seasonal index
C) find the equation of the trend line using the deseasonlized data
D) forecast for future periods using the trend line
E) add the seasonal index to the trend forecast
12) At a university with 1,000 business majors, there are 200 business students enrolled
in an introductory statistics course. Of these 200 students, 50 are also enrolled in an
introductory accounting course. There are an additional 250 business students enrolled
in accounting but not enrolled in statistics. If a business student is selected at random,
what is the probability that the student is enrolled in statistics?
A) 0.05
B) 0.20
C) 0.25
D) 0.30
E) None of the above
13) The following is a payoff table.
What decision should be made based on the minimax regret criterion?
A) Alternative 1
B) Alternative 2
C) Alternative 3
D) State of Nature C
E) Does not matter
14) The term queue “discipline” describes the
A) degree to which members of the queue renege.
B) sequence in which members of the queue arrived.
C) degree to which members of the queue are orderly and quiet.
D) sequence in which members of the queue are serviced.
E) All of the above
15) A graphical plot with sales on the Y axis and time on the X axis is a
A) scatter diagram.
B) trend projection.
C) radar chart.
D) line graph.
E) bar chart.
16) Defects in marble countertops usually require the whole top to be reconstructed. In
one kitchen shop, the percent defective in the past has been one percent. If a sample
size of 30 is taken, what should the 95.5 percent upper control limit be?
A) 0.030
B) 0.000
C) 0.046
D) 0.064
E) None of the above
17)
A)
B)
C)
D)
E) None of the above
18)
A)
B)
C)
D)
E) None of the above
19) A p-chart is based on which of the following probability distributions?
A) Poisson
B) Binomial
C) Uniform
D) Exponential
E) Gamma
20) For the data below:
(a) Develop a scatter diagram.
(b) Develop a six-year moving average forecast.
(c) Find MAPE.
21) When using the shortest-route technique, the second step is to
A) find the next-nearest node to the origin and put the distance in a box by the node.
B) trace the path from the warehouse to the plant.
C) determine the average distance traveled from source to end.
D) find the nearest node to the origin and put a distance box by the node.
E) None of the above
22) Table M8-15
Table M8-15 describes a transportation problem:
(a) Use the northwest corner method to get an initial solution.
(b) What is the cost of the initial solution?
(c) Use the stepping-stone method to find the optimal solution.
(d) What is the cost of the optimal solution?
(e) Is there an alternate optimal solution?
23) Which of the following distributions is most often used to estimate the arrival
pattern?
A) negative exponential
B) normal
C) Poisson
D) Erlang
E) beta
24) An urn contains 7 blue and 3 yellow chips. If the drawing of chips is done with
replacement, determine the probability of:
(a) drawing three yellow chips.
(b) drawing a blue chip on the first draw and a yellow chip on the second draw.
(c) drawing a blue chip on the second draw given that a yellow chip was drawn on the
first draw.
(d) drawing a yellow chip on the second draw given that a blue chip was drawn on the
first draw.
(e) drawing a yellow chip on the second draw given that a yellow chip was drawn on
the first draw.
25) Operations Research is known as
A) the science of numerical analysis.
B) the science of sensitivity analysis.
C) the science of better.
D) the science of modeling.
E) None of the above
26) Given the following two-person game, what strategy should the players play?
27) Sam the Vet is running a rabies vaccination clinic for dogs at the local grade school.
Sam can vaccinate a dog every 3 minutes. It is estimated that the dogs will arrive
independently and randomly throughout the day at a rate of 1 dog every 6 minutes,
according to a Poisson distribution. Also assume that Sam’s vaccinating times are
exponentially distributed. Sam would like to have each waiting dog placed in a holding
pen. If Sam wants to be certain he has enough cages to accommodate all dogs at least
90 percent of the time, how many cages should he prepare?
28) List the five steps to form a dual.
29) ________ refers to a quality emphasis that encompasses the entire organization,
from supplier to customer.
30) Develop the shortest-route network for the problem below, and determine the
minimum distance from node 1 to node 8.
31) The cornerstone of modern game theory includes the concepts developed by this
person.
32) A manufacturer of microcomputers produces four models: Portable, Student, Office,
and Network. The profit per unit on each of these four models is $500, $350, $700, and
$1000, respectively. The models require the labor and materials per unit shown below.
How many of each model should be produced to maximize profit. What is the
maximum profit?
33) The solution process of ________ implies that we look at all possible solutions.
34) State the mathematical expression for exponential smoothing.