A pattern test can identify an out-of-control process even if all sample points are within
control limits.
Human resources management provides product demand estimates that are used in
production decisions.
Taiichi Ohno observed that customers in American supermarkets pull items through the
system based on what is needed to satisfy demand.
An advantage of using a computer versus a manual approach when performing a
simulation is that it often takes only seconds versus hours to reach a steady-state result.
Statistical process control is based on a philosophy of inspection as opposed to
prevention.
Activities that are not on a project’s critical path have zero slack.
With Six Sigma, the project team leader is known as a Black Belt.
Simulation is a popular decision-making tool that can be applied to any type of
problem.
Learning curves have limited application for assembly lines with short, repetitive jobs.
It is sometimes not necessary to determine new control limits after special cause
(nonrandom) variation has been identified if the source has been eliminated without
changing the process.
E-business replaces physical exchange processes with electronic ones.
Microsoft Project is a software package that supports CPM/PERT analysis.
One of the factors supporting the increase in new products has been advances in the
technology available for designing products.
The principles of total quality management (TQM) cannot be applied to project
management.
Enterprise project management refers to the management and control of a large,
complex project.
How many cycles should be used in a time study in order to be 95% confident that the
time-study average job cycle time is within 5% of the true average job cycle time?
Assume that the average job cycle time is 2.67 minutes, and the standard deviation of
the sample is 0.72 minutes.
a. 36 cycles
b. 72 cycles
c. 98 cycles
d. 112 cycles
The development of the assembly line by Henry Ford is based on the principles of
a. scientific management.
b. mass production.
c. both scientific management and mass production.
d. None of these answer choices is correct.
The following information relates to a company’s aggregate production planning
activities:
Beginning Workforce = 35 workers
Production per Employee = 1,250 units per quarter
Hiring Cost = $500 per worker
Firing Cost = $1,000 per worker
Inventory Carrying Cost = $20 per unit per quarter
If a level production strategy is used then the cost of the level production plan
(inventory costs plus hiring and firing costs) is
a. $20,000
b. $645,000
c. $1,250,000
d. $1,270,000
Linear programming, waiting line, simulation, and PERT/CPM are all elements of
which era of operations and supply chain management?
a) Quality Research
b) Operations Research
c) Internet Revolution
d) Globalization
Snacknow, a food service firm, is calculating its monthly productivity report. From the
following data calculate the multifactor productivity.
a. 0.220
b. 0.476
c. 0.800
d. 1.000
The longest path through a project network is referred to as the
a. activity-on-node path.
b. path of greatest slack.
c. critical path.
d. noncritical path.
Internet transportation exchanges bring together shippers who post __________ and
carriers that post __________ in order to arrange shipments.
a) loads, capacity
b) capacity, loads
c) loads, loads
d) capacity, capacity
Which of the following control charts are often based on sample sizes equal to or larger
than one hundred?
a.
b. R
c. c
d. p
The following set of jobs must be processed serially through a two-step system. The
times at each process are in hours. If Johnson’s Rule is used to sequence the jobs then
Job C would start processing on operation 2 at
a. hour 13.
b. hour 26.
c. hour 47.
d. hour 53
Four common types of control charts include all of the following except:
a. -chart
b. t-chart
c. p-chart
d. c-chart
Consider an espresso stand with a single barista. Customers arrive to the stand at the
rate of 28 per hour according to a Poisson distribution. Service times are exponentially
distributed with a service rate of 35 customers per minute. If the arrival rate remains at
28 customers per hour and the stand’s manager wants to have the average time a
customer spends in the system (i.e., wait time and service time) to be a maximum of 6
minutes on average, then the service rate must
a. decrease by 2 to 33 customers per hour.
b. decrease by 3 to 32 customers per hour.
c. increase by 3 to 38 customers per hour.
d. increase by 2 to 37 customers per hour.
A package delivery service wants to build a new distribution center in Boise, Idaho. The
location of the center needs to be in the vicinity of Interstate-84, Highway-55 and the
Boise Airport. The following table provides the coordinates of these three sites and the
number of weekly packages.
The suggested coordinates for the new warehouse using the center of gravity method
are
a. x = 36.0 and y = 35.0
b. x = 27.3 and y = 22.3
c. x = 25.54 and y =24.4
d. x = 27.5 and y = 35.5
A _______________ is shop paperwork that travels with the job.
a. makespan chart
b. work package
c. dispatch list
d. None of these answer choices is correct.
The _________________ is the probability of rejecting a lot that has an acceptable
quality level. is referred to as the
a. producer’s risk.
b. consumer’s risk.
c. lot tolerance percent defective.
d. acceptable quality level.
Allowing employees more control over their own work and some of the supervisory
responsibilities is known as
a. vertical job enlargement.
b. empowerment.
c. horizontal job enlargement.
d. cross training.
The process of creating a work environment where employees can contribute to their
full potential is
a. diversity.
b. equal opportunity.
c. affirmative action.
d. None of these answer choices is correct.
A service counter employs two servers. On average, a server requires 8 minutes to
process a customer and service times follow an exponential distribution. Customers
arrive at the counter at the rate of 12 per hour according to a Poisson distribution. The
average amount of time spent by a customer waiting in line is approximately
a. 0.370 minutes
b. 2.844 minutes
c. 14.22 minutes
d. 22.20 minutes
All of the following are responsibilities of operations managers except
a. acquiring financial resources
b. managing inventories
c. planning production
d. scheduling production
List at least four design for manufacture guidelines that promote good design practice.
What can lead to increases in productivity?
A(n) ________________ curve is a graph showing the probability of accepting a lot for
different quality levels with a specific sampling plan.
e. operating characteristic (OC)
f. average outgoing quality
g. lot tolerance percent defective
h. single-sample attribute
What is a bill-of-material?
What is queue discipline and queue length?
Modern Inc. manufactures low-cost tables at a processing cost of $80 per table. The
company produces 100 units per day and averages 90% good quality resulting in 10%
defective items. Fifty percent of the defective units are reworked prior to shipment to
Modern’s distribution center.
What is the product yield?
a. 80
b. 85
c. 90
d. 95
What is the difference between cross-training and job rotation?
Briefly discuss attribute and variable quality measures.