1) One of the main advantages of standardization is that it increases the potential
variety of products.
2) Scheduling and maintaining equipment are operational decisions.
3) The goal of maintenance is to maintain the productive system in good working order
while minimizing or eliminating the cost of preventive maintenance.
4) Available-to-promise in the first week is equal to beginning inventory plus MPS
quantity, if any, less committed customer orders before the next MPS quantity.
5) Special-purpose technology is a common way of offering increased customization in
manufacturing or services without taking on additional labor costs.
6) Among the benefits claimed for cellular manufacturing are less material handling and
reduced setup time.
7) Quality of design refers to the degree to which goods and services achieve the intent
of the designers based on marketing and other information.
8) The quality control improvement tool that resembles a “fishbone” is:
A.brainstorming.
B.check sheets.
C.Pareto analysis.
D.cause-and-effect diagrams.
E.fail-safe methods.
9) Increasing the service offered to the customer makes it more difficult to compete on
the basis of:
A.order qualifiers.
B.customization.
C.quality.
D.price.
E.flexibility.
10) A control chart used to monitor the process mean is the:
A.p-chart.
B.R-chart.
C.x-bar chart.
D.c-chart.
E.Gantt chart.
11) The purpose of acceptance sampling is to:
A.estimate process quality.
B.estimate lot quality.
C.detect and eliminate defectives.
D.decide if a lot meets predetermined standards.
E.accept samples of products.
12) If average demand for an inventory item is 200 units per day, lead time is three
days, and safety stock is 100 units, the reorder point is:
A.100 units.
B.200 units.
C.300 units.
D.600 units.
E.700 units.
13) In which type of processing system would gasoline be produced from crude oil?
A.job shop
B.batch
C.assembly
D.continuous
E.project
14) Operation X feeds into operation Y. Operation X has an effective capacity of 55
units per hour. Operation Y has an effective capacity of 50 units per hour. Increasing X’s
effective capacity to ensure that Y’s utilization is maximized would be an example of
________ a(n) constraint.
A.overcoming
B.outsourcing
C.insourcing
D.cushioning
E.supporting
15) The term ‘suboptimization” is best described as the:
A.result of individual departments making the best decisions for their own areas but
hurting other areas.
B.limitations on decision making caused by costs and time.
C.result of failure to adhere to the steps in the decision process.
D.result of ignoring symptoms of the problem.
E.optimization on a micro level that extends to the macro level.
16) A methods and measurement analyst wants to develop a time standard for a certain
task. In a preliminary study, he observed one worker perform the task six times with an
average observed time of 20 seconds and a standard deviation of two seconds.
What is the standard time for this task if the employee worked at a 20 percent faster
pace than average, and an allowance of 25 percent of the workday is used?
A.20 seconds
B.25 seconds
C.26.7 seconds
D.30 seconds
E.32 seconds
17) For the following constraints, which point is in the feasible solution space of this
maximization problem?
A.x = 1, y = 5
B.x = -1, y = 1
C.x = 4, y = 4
D.x = 2, y = 1
E.x = 2, y = 8
18) The chair of the operations management department at Quality University wants to
construct a p-chart for determining whether the four faculty teaching the basic P/OM
course are under control with regard to the number of students who fail the course.
Accordingly, he sampled 100 final grades from last year for each instructor, with the
following results:
What is the estimate of the standard deviation of the sampling distribution for an
instructor’s sample proportion of failures?
A..0075
B..03
C..075
D..3
E..75
19) Which of the following is least likely to be a consideration when scheduling a
high-volume system?
A.equipment failures
B.material shortages
C.accidents
D.worker absences
E.demand variability
20) Location choice I has monthly fixed costs of $100,000 and per-unit variable costs of
$10. What would its total cost be at a monthly volume of 550 units?
A.$105,200
B.$102,500
C.$100,250
D.$100,520
E.$105,500
21) Acceptance sampling plans must specify the lot size, the sample size, and the
acceptance/rejection criteria.
22) Activity E has an optimistic time of 9 days, a most likely time of 12 days, and a
pessimistic time of 15 days. Estimate its expected time and standard deviation.
23) The logistics/operations manager of a mail order house purchases two products for
resale: king beds (K) and queen beds (Q). Each king bed costs $500 and requires 100
cubic feet of storage space, and each queen bed costs $300 and requires 90 cubic feet of
storage space. The manager has $75,000 to invest in beds this week, and her warehouse
has 18,000 cubic feet available for storage. Profit for each king bed is $300 and for each
queen bed is $150.
What is the storage space constraint?
24)
25) Consider these data regarding the multiple-server, priority service queuing model:
Service Rate: 2 per hour (Poisson)
Number of Servers: 5
What is the average number of all items waiting in line for service?
26) Given the following process control data for a normally distributed quality variable
(three samples of size four each):
If the process is known to have a mean of 15 and a standard deviation of 3, using
three-sigma control limits, do any of the sample means indicate an out-of-control
process mean?
27) Given the following process control data for a quality attribute (three samples of
size 400 each):
If the process proportion of defectives is unknown, what is the estimate of this
proportion?
28) Given the following data for a make-or-buy decision:
What are total costs to buy a quantity of 15,000 units per year?