Operations MGMT Final

In general, the supply chain starts with: a. research and development b. the provider of basic raw materials c. final customers at the retail store d. a distributor

b. the provider of basic raw materials

Gantt charts are: A. not easy to understand. B. planning charts used to schedule resources and allocate time. C. widely used network techniques. D. not widely used.

B. planning charts used to schedule resources and allocate time.

The three phases involved in the management of large projects are: A. ​scheduling, operating, and evaluating. B. planning, scheduling, and evaluating. C. planning, scheduling, and controlling. D. scheduling, designing, and operating.

C. planning, scheduling, and controlling.

The​ ________ distribution is used by PERT analysis to calculate expected activity times and variances. A. Alpha B. Gaussian C. Normal D. Beta E. Binomial

D. Beta

The difference between AON and AOA networks is​ that: A. nodes consume no resources or time in AOA networks. B. nodes designate activities in​ AON, while arrows designate activities in AOA. C. AOA networks sometimes require dummy activities. D. both are acceptable in​ practice; however, Microsoft Project uses AON. E. All of the above are true.

E. All of the above are true.

True or False: The Japanese use of the term poka-yoke to refer to continuous improvement.

False

Dummy activities: A. are used when two activities have identical starting and ending events. B. are found in both AOA and AON networks. C. have a duration equal to the shortest​ non-dummy activity in the network. D. cannot be on the critical path.

A. are used when two activities have identical starting and ending events.

A simple CPM network has three​ activities, A,​ B, and C. A is an immediate predecessor of B and of C. B is an immediate predecessor of C. The activity durations are A=​4, B=​3, C=5. A. The critical path is​ A-B-C, duration 12. B. The critical path is​ A-C, duration 10.5 C. The network has no critical path. D. The critical path is​ A-B-C, duration 9. E. The critical path cannot be determined without knowing PERT expected activity times.

A. the critical path is A-B-C, duration 12.

Which of the following statements regarding CPM is​ true? A. The critical path is the shortest of all paths through the network. B. All activities on the critical path have their LS equal to the maximum EF of all immediate predecessors. C. All activities on the critical path have their ES equal to their LF. D. The critical path is that set of activities that has positive slack. E. Some networks have no critical path.

B. All activities on the critical path have their LS equal to the maximum EF of all immediate predecessors.

Which of the following statements regarding CPM networks is​ true? A. There can be multiple critical paths on the same​ project, all with different durations. B. If a specific project has multiple critical​ paths, all of them will have the same duration. C. The late start of an activity is its late finish plus its duration. D. The early finish of an activity is the latest early start of all preceding activities. E. None of the above are true.

B. If a specific project has multiple critical​ paths, all of them will have the same duration.

Which of the following statements regarding critical paths is​ true? A. Every network has only one critical path. B. On a specific​ project, there can be multiple critical​ paths, all with exactly the same duration. C. The shortest of all paths through the network is the critical path. D. Some activities on the critical path may have slack. E. The duration of the critical path is the average duration of all paths in the project network.

B. On a specific project, there can be multiple critical paths, all with exactly the same duration

PERT analysis computes the variance of the total project completion time as: A. the variance of the final activity of the project. B. the sum of the variances of all activities on the critical path. C. the sum of the variances of all activities not on the critical path. D. the sum of the variances of all activities in the project.

B. the sim of the variances of all activities on the critical path

The main difference between PERT and CPM is​ that: A. PERT is more accurate than CPM. B. PERT ignores activity costs. C. PERT employs three time estimates for each activity. D. PERT assumes that activity durations are known. E. CPM assumes activity durations can vary.

C. PERT employs three time estimates for each activity

Which of the following statements regarding PERT times is​ true? A. The most likely time estimate is an estimate of the maximum time an activity will require. B. The pessimistic time estimate is an estimate of the minimum time an activity will require. C. The expected time estimate is calculated as t​ = ​(a​ + 4m​ + b​)/6. D. The optimistic time estimate is an estimate of the maximum time an activity will require. E. The optimistic time estimate is usually the same as the most likely time estimate.

C. The expected time estimate is calculated as t​ = ​(a​ + 4m​ + b​)/6.

​Cause-and-effect diagrams are also known as: A. target specification graphs. B. Pareto charts. C. fish-bone charts. D. flowcharts.

C. fish-bone charts.

The critical path of a network is the: A. path with the most activities. B. shortest time path through the network. C. longest time path through the network. D. path with the fewest activities.

C. longest time path through the network.

Among the​ following, critical path and slack time analysis MOST help: A. point out who is responsible for various activities. B. highlight relationships among project activities. C. pinpoint activities that need to be closely watched. D. managers define the project activities.

C. pinpoint activities that need to be closely watched

A simple CPM network has three​ activities, A,​ B, and C. A is an immediate predecessor of B and of C. B is an immediate predecessor of C. The activity durations are A=​4, B=​3, C=5. A. The network has no critical path. B. The critical path is​ A-C, duration 10.5 C. The critical path is​ A-B-C, duration 12. D. The critical path cannot be determined without knowing PERT expected activity times. E. The critical path is​ A-B-C, duration 9.

C. the critical path is A-B-C, duration 12

Which of the following statements concerning CPM activities is​ false? A. The late start of an activity is its late finish less its duration. B. The early finish of an activity is the early start of that activity plus its duration. C. The late finish of an activity is the earliest late start of all preceding activities. D. The late finish is the earliest of the late start times of all successor activities. E. The early start of an activity is the latest early finish of all preceding activities.

C. the late finish of an activity is the earliest late start of all preceding activities

Which of the following statements regarding critical paths is​ true? A. Some activities on the critical path may have slack. B. Every network has only one critical path. C. The shortest of all paths through the network is the critical path. D. On a specific​ project, there can be multiple critical​ paths, all with exactly the same duration. E. The duration of the critical path is the average duration of all paths in the project network.

D. On a specific​ project, there can be multiple critical​ paths, all with exactly the same duration.

Which of the following statements is an assumption PERT makes regarding the probability of finishing the project on​ time? A. Activity times are statistically identical. B. Total project completion times follow a uniform probability distribution. C. Activity times are statistically dependent. D. Total project completion times follow a normal probability distribution.

D. Total project completion times follow a normal probability distribution

The time an activity will take assuming very unfavorable conditions​ is: A. the minimum time. B. the activity variance. C. the optimistic time. D. the pessimistic time. E. exactly twice as long as the expected time.

D. the pessimistic time.

ABC inventory analysis pertains to: a. accept, buy, and check b. inventory categories by annual usage c. allowance between checks d. expensive, normal, and cheap inventory

b. inventory categories by annual usage

The goal of inspection is to: a. correct deficiencies in products b. detect a bad process immediately c. correct system deficiencies d. add value to a product or service e. all of the above

b. detect a bad process immediately

Which of the following is NOT a typical service attribute? a. easy to store b. customer interaction is high c. intangible product

a. easy to store

Poka-yoke is the Japanese term for: a. foolproof b. card c. just-in-time production d. continuous improvement e. fishbone diagram

a. foolproof

Which of the following TQM tools would be best suited for displaying the number of students majoring in each business discipline? a. histogram b. cause-and-effect diagram c. flowchart d. scatter diagram

a. histogram

Which of the following is NOT one of the basic functions of the management process? a. inspecting b. controlling c. leading

a. inspecting

The critical path of the network is the: a. longest time path through the network b. path with the fewest activities c. shortest time path through the network d. path with the most activities

a. longest time path through the network

The economic activities that typically produce an intangible product are referred to as: a. services b. goods c. phantoms d. products

a. services

Which of the following is NOT a characteristic of services? a. standardized product b. produced and consumed simultaneously c. unique d. intangible

a. standardized product

Increases in productivity are difficult to achieve if : a. the task is more personal b. the task is more repetitive c. the task in more standardized

a. the task is more personal

A fish bone chart is also known as a(n): a. scatter diagram b. Ishikawa diagram c. poka-yoke diagram d. Taguchi diagram e. Kaizen diagram

b. Ishikawa diagram

A global network of organizations and activities that supply a firm with goods and services is referred to as: a. production b. operations management c. a supply chain d. business functions

c. a supply chain

Which is NOT true regarding differences between goods and services? a. services are generally produced and consumed simultaneously; tangible goods are not b. services tend to be more knowledge based than goods c. goods tend to have higher customer interaction than services

c. goods tend to have higher customer interaction than services

Attribute inspection measures: a. such dimensions as weight, speed, size, or strength to see if an item falls within an acceptable range b. if cause and effect are present c. if the product is good or bad d. whether or not the product attributes conform to the inspector's personal tastes

c. if the product is good or bad

The capital investment each year in the United States usually _____________. a. decreases b. remains constant c. increases

c. increases

Which appears to provide the best opportunity for increases in productivity? a. raw materials b. capital c. management d. labor

c. management

Which one of the following appears to provide the best opportunity for increases in productivity? a. capital b. labor c. management

c. management

if a sample of parts is measured and the mean of the measurements is outside the control limits, the process is: a. in control, but not capable of producing within the established control limits b. monitored closely to see if the next sample mean will also fall outside the control limits c. out of control and the process should be investigated for assignable variation d. within the established control limits with only natural causes of variation e. none of the above

c. out of control and the process should be investigated for assignable variation

Marketing issues such as advertising, image, and promotion are important to quality because: a. they educate consumers on how to use the product b. they define for consumers the tangible elements of a service c. the intangible attributes of a product (including any accompanying service) may not be defined by the consumer d. they raise expenses and therefore decrease profitability e. they make the product seem more valuable than it really is

c. the intangible attributes of a product (including any accompanying service) may not be defined by the consumer

When sample measurements falls inside the control limits, it means that: a. the process output exceeds the requirements b. the process limits cannot be determined statistically c. the process output does not fulfill the requirements d. if there is no other pattern in the samples, the process is in control e. each unit manufactured is good enough to sell

d. if there is no other pattern in the samples, the process is in control

Productivity increases when: a. inputs and outputs increase proportionately b. inputs increase while outputs remain the same c. outputs decrease while inputs remain the same d. inputs decrease while outputs remain the same

d. inputs decrease while outputs remain the same

100% inspection: a. is practical and an excellent fit for world-class manufacturers b. means that only good parts will be shipped to a customer c. catches all of the defective parts d. means that every part is checked to see whether or not it is defective

d. means that every part is checked to see whether or not it is defective

A large percentage of the revenue of most firms is spent on which function? a. finance b. research and development c. marketing d. operations

d. operations

Which of the following statements regarding critical paths is true? a. every network has only one critical path b. the duration of the critical path is the average duration of all paths in the project network c. the shortest of all paths through the network is the critical path d. some activities on the critical path may have slack e. on a specific project, there can be multiple critical paths, all with exactly the same duration

e. on a specific project, there can be multiple critical paths, all with exactly the same duration

How might you measure service quality in a hotel? a. accuracy of room bill b. number of minutes waiting to check in c. room available by 3:00 PM d. any unserviceable item in the room (light, tv, etc.) e. response time for room service f. all of the above

f. all of the above

The most realistic estimate of the time required to complete an activity is referred to as what?

most likely time