# Saint Mba550 final exam

Question 1.1.In a ________ integer model, all decision variables have integer solution values. (Points : 5)
total
0-1
mixed
all of the above

Question 2.2.The \$75 per credit hour course fee tacked on to all the MBA classes has generated a windfall of \$56,250 in its first semester. “Now we just need to make sure we spend it all,” the Assistant Dean cackled. She charged the Graduate Curriculum Committee with generating a shopping list before their next meeting. Four months later, the chairman of the committee distributed the following. As the professor for the quantitative modeling course, he tended to think in terms of decision variables, so he added the left-most column for ease of use.

Decision
Variable Item Cost Note
AiPads for everybody \$750/unitMust get a cover if these are purchased
CSpeaker series\$15,000Can’t afford both this and the iPads
DSubscriptions to the Wall
Street Journal\$10/unitDon’t need if we have the electronic version
ESubscriptions to the electronic
version of the Wall Street

Which constraint best describes the situation with decision variables A and B? (Points : 5)
B – A = 0
B – A = 0
B + A = 1
B – A = 1

Question 3.3.Types of integer programming models are ________. (Points : 5)
total
0-1
mixed
all of the above

Question 4.4.________ is used to analyze changes in model parameters. (Points : 5)
Optimal solution
Feasible solution
Sensitivity analysis
A slack variable

Question 5.5.Cully Furniture buys two products for resale: big shelves (B)and medium shelves (M). Each big shelf costs \$500 and requires 100 cubic feet of storage space, and each medium shelf costs \$300 and requires 90 cubic feet of storage space. The company has \$75,000 to invest in shelves this week, and the warehouse has 18,000 cubic feet available for storage. Profit for each big shelf is \$300 and for each medium shelf is \$150. Which of the following is not a feasible purchase combination? (Points : 5)
100 big shelves and 82 medium shelves
150 big shelves and 0 medium shelves
100 big shelves and 100 medium shelves
100 big shelves and 0 medium shelves

Question 6.6.Which of the list of items below is not a component of a linear programming problem? (Points : 5)
Constraints
Objective function
Decision variables
Nonlinear residual

Question 7.7.The production manager for the Coory soft drink company is considering the production of two kinds of soft drinks: regular (R) and diet(D). Two of the limited resources are production time (8 hours = 480 minutes per day) and syrup (1 of the ingredients), limited to 675 gallons per day. To produce a regular case requires 2 minutes and 5 gallons of syrup, while a diet case needs 4 minutes and 3 gallons of syrup. Profits for regular soft drink are \$3.00 per case and profits for diet soft drink are \$2.00 per case. What is the time constraint? (Points : 5)
2D + 4R = 480
2R + 3D = 480
3R + 2D = 480
2R + 4D = 480

Question 8.8.In a ________ integer model, some solution values for decision variables are integers and others can be non-integer. (Points : 5)
total
0-1
mixed
all of the above

Question 9.9.The \$75 per credit hour course fee tacked on to all the MBA classes has generated a windfall of \$56,250 in its first semester. “Now we just need to make sure we spend it all,” the Assistant Dean cackled. She charged the Graduate Curriculum Committee with generating a shopping list before their next meeting. Four months later, the chairman of the committee distributed the following. As the professor for the quantitative modeling course, he tended to think in terms of decision variables, so he added the left-most column for ease of use.

Decision
Variable Item Cost Note
AiPads for everybody \$750/unitMust get a cover if these are purchased
CSpeaker series\$15,000Can’t afford both this and the iPads
DSubscriptions to the Wall
Street Journal\$10/unitDon’t need if we have the electronic version
ESubscriptions to the electronic
version of the Wall Street

Which of the following constraints best describes the relationship between the electronic Wall Street Journal subscription and the iPads? (Points : 5)
E + A = 0
E + A = 1
E – A = 0
E – A = 1

Question 10.10.Mallory Furniture buys two products for resale: big shelves (B) and medium shelves (M). Each big shelf costs \$500 and requires 100 cubic feet of storage space, and each medium shelf costs \$300 and requires 90 cubic feet of storage space. The company has \$75,000 to invest in shelves this week, and the warehouse has 18,000 cubic feet available for storage. Profit for each big shelf is \$300 and for each medium shelf is \$150. If the Mallory Furniture company decides to purchase 150 big shelves and no medium shelves, which of the two resources will be left over? (Points : 5)
Investment money only
Storage space only
Investment money and storage space
Neither investment money nor storage space

Question 11.11.The \$75 per credit hour course fee tacked on to all the MBA classes has generated a windfall of \$56,250 in its first semester. “Now we just need to make sure we spend it all,” the Assistant Dean cackled. She charged the Graduate Curriculum Committee with generating a shopping list before their next meeting. Four months later, the chairman of the committee distributed the following. As the professor for the quantitative modeling course, he tended to think in terms of decision variables, so he added the left-most column for ease of use.

Decision
Variable Item Cost Note
AiPads for everybody \$750/unitMust get a cover if these are purchased
CSpeaker series\$15,000Can’t afford both this and the iPads
DSubscriptions to the Wall
Street Journal\$10/unitDon’t need if we have the electronic version
ESubscriptions to the electronic
version of the Wall Street

Which of the constraints best describes the relationship between the iPads for everyone and the speaker series? (Points : 5)
A – C = 1
A + C = 1
A – C = 0
A + C = 2

Question 12.12.Multiple optimum solutions can occur when the objective function is _______ a constraint line. (Points : 5)
unequal to
equal to
linear to
parallel to

Question 13.13.A linear programming model consists of: (Points : 5)
decision variables.
an objective function.
constraints.
all of the above

Question 14.14.If a maximization linear programming problem consists of all less-than-or-equal-to constraints with all positive coefficients and the objective function consists of all positive objective function coefficients, then rounding down the linear programming optimal solution values of the decision variables will ________ result in a feasible solution to the integer linear programming problem. (Points : 5)
always
sometimes
optimally
never

Question 15.15.Elements of project planning include: (Points : 5)
defining project objectives.
identifying activities to crash.
calculating expected times and standard deviations.
conducting a “lessons learned” session.

Question 16.16.The activities that must be completed prior to the start of an activity in question are called the immediate ________ of the activity in question. (Points : 5)
successors
predecessors
successors and predecessors
followers

Question 17.17.If t is the expected completion time for a given activity, then _____. (Points : 5)
LF = LS – t
EF = ES – t
EF = ES + t
EF = LS – t

Question 18.18.Which of the following could be a linear programming objective function? (Points : 5)
Z = 1A + 2BC + 3D
Z = 1A + 2B + 3C + 4D
Z = 1A + 2B / C + 3D
Z = 1A + 2B2 + 3D

Question 19.19.A work breakdown structure breaks down a project into: (Points : 5)
weeks.
areas.
arcs.
modules.

Question 20.20.Decision variables: (Points : 5)
measure the objective function.
measure how much or how many items to produce, purchase, hire, etc.
always exist for each constraint.
measure the values of each constraint.

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