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Homework answers / question archive / Texas A&M University OPSY 5315-W01 1)Which of the following statements regarding Bechtel is true? Its competitive advantage is project management

Texas A&M University OPSY 5315-W01 1)Which of the following statements regarding Bechtel is true? Its competitive advantage is project management

Management

Texas A&M University

OPSY 5315-W01

1)Which of the following statements regarding Bechtel is true?

    1. Its competitive advantage is project management.
    2. The project of restoring Kuwait's oil fields was dominated by logistical issues.
    3. The Kuwaiti oil field restoration used the port of Dubai as a central transshipment point.
    4. Bechtel's procurement program is global in nature.
    5. All of the above are tru

e (Global company profile, moderate)

 

  1. Which of the following statements about Bechtel is true?
    1. Even though Bechtel is over 100 years old, the Kuwaiti oil fields was its first "project."
    2. Bechtel is the world's premier manager of massive construction and engineering projects.
    3. Bechtel's competitive advantage is supply chain management.
    4. While its projects are worldwide, its network of suppliers is largely in the U.S.
    5. All of the above are tru

b (Global company profile, moderate)

 

  1. The phases of project management are
    1. planning, scheduling, and controlling
    2. planning, programming, and budgeting
    3. planning, organizing, staffing, leading, and controlling
    4. different for manufacturing projects than for service projects
    5. GANTT, CPM, and PERT

a (The importance of project management, easy)

 

  1. A project organization
    1. is effective for companies with multiple large projects
    2. is appropriate only in construction firms
    3. often fails when the project cuts across organizational lines
    4. is formed to ensure that programs (projects) get proper management and attention
    5. a and d are both true

e (Project planning, moderate)

 

  1. Which of the following statements regarding project management is false?
    1. Gantt charts give a timeline for each of a project's activities, but do not adequately show the interrelationships of activities.
    2. A project organization works best for a project that is temporary but critical to the organization.
    3. Project organization works well when the work contains simple, independent tasks.
    4. Gantt charts and PERT/CPM are never used together.
    5. None of the above is tru

c (Project planning, moderate)

 

  1. A code of ethics especially for project managers
    1. has been established by the Project Management Institute
    2. has been formulated by the Federal government
    3. has been formulated by the World Trade Organization
    4. is inappropriate, since everyone should use the same guidance on ethical issues
    5. does not exist at this time

a (Project planning, moderate)

 

  1. Divulging information to some bidders on a project to give them an unfair advantage
    1. is the same thing as altering a status report
    2. is bribery
    3. is permitted by NAFTA
    4. is known as bid rigging
    5. is acceptable for private corporations but not for government agencies

d (Project planning, moderate)

 

  1. Ethical issues that may arise in projects large and small include
    1. bid rigging
    2. expense account padding
    3. compromised safety or health standards
    4. bribery
    5. All of the above are tru

e (Project planning, easy)

 

  1. Which of the following statements regarding Gantt charts is true?
    1. Gantt charts give a timeline and precedence relationships for each activity of a project.
    2. Gantt charts use the four standard spines of Methods, Materials, Manpower, and Machinery.
    3. Gantt charts are visual devices that show the duration of activities in a project.
    4. Gantt charts are expensive.
    5. All of the above are tru

c (Project scheduling, moderate)

 

  1. Which of the following statements regarding critical paths is true?
    1. The shortest of all paths through the network is the critical path.
    2. Some activities on the critical path may have slack.
    3. Every network has exactly one critical path.
    4. On a specific project, there can be multiple critical paths, all with exactly the same duration.
    5. The duration of the critical path is the average duration of all paths in the project network.

d (Project management techniques: PERT and CPM, moderate)

 

  1. Which of the following statements regarding CPM is true?
    1. The critical path is the shortest of all paths through the network.
    2. The critical path is that set of activities that has positive slack.
    3. Some networks have no critical path.
    4. All activities on the critical path have their LS equal their predecessor's EF.
    5. All of the above are fals

d (Project management techniques: PERT and CPM, moderate)

 

  1. 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=8.

  1. The critical path is A-B-C, duration 15.
  2. The critical path is A-C, duration 12.
  3. The critical path is A-B-C, duration 13.5
  4. The critical path cannot be determined without knowing PERT expected activity times.
  5. The network has no critical path.

a (Project management techniques: PERT and CPM, difficult)

 

  1. A simple CPM network has three activities, D, E, and F. D is an immediate predecessor of E and of

F. E is an immediate predecessor of F. The activity durations are D=4, E=3, F=8.

  1. The critical path is D-E-F, duration 15.
  2. The critical path is D-F, duration 12.
  3. Slack at D is 3 units
  4. Slack at E is 3 units
  5. Both a and c are true

a (Project management techniques: PERT and CPM, difficult)

 

  1. A simple CPM network has five activities, A, B, C, D, and E. A is an immediate predecessor of C and of D. B is also an immediate predecessor of C and of D. C and D are both immediate predecessors of E.
    1. There are two paths in this network.
    2. There are four paths in this network.
    3. There are five paths in this network.
    4. There are 25 paths through this network.
    5. None of these statements is tru

b (Project management techniques: PERT and CPM, moderate)

 

  1. Activity D on a CPM network has predecessors B and C, and has successor F. D has duration 6. B's earliest finish is 18, while C's is 20. F's late start is 26. Which of the following is true?
    1. B is a critical activity.
    2. C is completed before B.
    3. D has no slack but is not critical.
    4. D is critical, and has zero slack.
    5. All of the above are tru

d (Project management techniques: PERT and CPM, difficult)

 

  1. Which of the following statements regarding CPM networks is true?
    1. There can be multiple critical paths on the same project, all with different durations.
    2. The early finish of an activity is the latest early start of all preceding activities.
    3. The late start of an activity is its late finish plus its duration.
    4. If a specific project has multiple critical paths, all of them will have the same duration.
    5. All of the above are tru

d (Project management techniques: PERT and CPM, moderate)

 

  1. Activity M on a CPM network has predecessors N and R, and has successor S. M has duration 5. N's late finish is 18, while R's is 20. S's late start is 14. Which of the following is true?
    1. M is critical and has zero slack.
    2. M has no slack but is not critical.
    3. The last start time of S is impossible.
    4. N is a critical activity.
    5. S is a critical activity.

c (Project management techniques: PERT and CPM, difficult)

 

  1. Which of the following statements concerning CPM activities is false?
    1. The early finish of an activity is the early start of that activity plus its duration.
    2. The late finish is the earliest of the late start times of all successor activities.
    3. The late start of an activity is its late finish less its duration.
    4. The late finish of an activity is the earliest late start of all preceding activities.
    5. The early start of an activity is the latest early finish of all preceding activities.

d (Project management techniques: PERT and CPM, difficult)

 

  1. The time an activity will take assuming very unfavorable conditions is
    1. the optimistic time
    2. the pessimistic time
    3. the activity variance
    4. the minimum time
    5. exactly twice as long as the expected time

b (Project management techniques: PERT and CPM, moderate)

 

  1. The critical path for the network activities shown below is            with duration               .

 

Activity

Duration

Immediate

Predecessors

A

4

---

B

2

A

C

7

--

D

4

A

E

5

B,C,D

 

    1. A-B-D; 10
    2. A-B-E; 11
    3. C-E; 12
    4. A-D-E; 13
    5. A-B-C-D-E; 22

d (Project management techniques: PERT and CPM, difficult)

 

  1. The critical path for the network activities shown below is            with duration               .

 

Activity

Duration

Immediate

Predecessors

A

2

--

B

4

--

C

6

A,B

D

1

A,B

E

2

B,C,D

 

    1. A-D-E; 5
    2. B-E; 6
    3. B-D-E; 7
    4. A-C-E; 10
    5. B-C-E; 12

 

e (Project management techniques: PERT and CPM, difficult)

 

  1. The               distribution is used by PERT analysis to calculate expected activity times and variances.
    1. Normal
    2. Beta
    3. Alpha
    4. Gaussian
    5. Binomial

b (Project management techniques: PERT and CPM, easy)

 

  1. The expected activity time in PERT analysis is calculated as
    1. the simple average of the optimistic, pessimistic, and most likely times
    2. the weighted average of a, m, and b, with m weighted 4 times as heavily as a and b
    3. the sum of the optimistic, pessimistic, and most likely times
    4. the sum of the optimistic, pessimistic, and most likely times, divided by six
    5. the sum of the activity variances, divided by six

b (Project management techniques: PERT and CPM, moderate)

 

  1. The critical path for the network activities shown below is            with duration               .

 

Activity

Duration

Immediate

Predecessors

A

10

---

B

8

---

C

2

A

D

4

A

E

5

B,C

 

    1. A-C; 12
    2. A-D-E; 19
    3. B-E; 13
    4. A-B-C-D-E; 29
    5. none of the above

b (Project management techniques: PERT and CPM, difficult)

 

  1. Which of the following statements regarding PERT times is true?
    1. The optimistic time estimate is an estimate of the minimum time an activity will require.
    2. The optimistic time estimate is an estimate of the maximum time an activity will require.
    3. The probable time estimate is calculated as t = (a + 4m + b).
    4. Pessimistic time estimate is an estimate of the minimum time an activity will require.
    5. Most likely time estimate is an estimate of the maximum time an activity will requir

a (Project management techniques: PERT and CPM, moderate)

 

  1. Which of the following statements regarding PERT times is true?
    1. Expected time is an estimate of the time an activity will require if everything goes as planned.
    2. The optimistic time estimate is an estimate of the maximum time an activity will require.
    3. The probable time estimate is calculated as t = (a + 4m + b)/6.
    4. Pessimistic time estimate is an estimate of the minimum time an activity will require.
    5. Most likely time estimate is an estimate of the maximum time an activity will requir

 

c (Project management techniques: PERT and CPM, moderate)

 

  1. The Beta distribution is used in project management to
    1. calculate slack on activities not on the critical path
    2. calculate the probability that a project will be completed within its budget
    3. calculate pessimistic and optimistic activity times
    4. determine which activity should be crashed
    5. none of the above

e (Project management techniques: PERT and CPM, moderate)

 

  1. The Beta distribution is used in project management to
    1. determine which activity should be crashed
    2. calculate the probability that a project will be completed within its budget
    3. calculate expected activity times
    4. calculate slack for activities on the critical path
    5. none of the above

c (Project management techniques: PERT and CPM, moderate)

 

  1. In a PERT network, non-critical activities that have little slack need to be monitored closely
    1. because PERT treats all activities as equally important
    2. because near-critical paths could become critical paths with small delays in these activities
    3. because slack is undesirable and needs to be eliminated
    4. because they are causing the entire project to be delayed
    5. because they have a high risk of not being completed

b (Project management techniques: PERT and CPM, moderate)

 

  1. Which of the following statements regarding PERT analysis is true?
    1. Each activity has two estimates of its duration.
    2. Project variance is the sum of all activity variances.
    3. Project standard deviation is the sum of all critical activity standard deviations.
    4. Only critical activities contribute to the project variance.
    5. None of the above is tru

d (Project management techniques: PERT and CPM, moderate)

 

  1. A project being analyzed by PERT has 60 activities, 13 of which are on the critical path. If the estimated time along the critical path is 214 days with a project variance of 100, the probability that the project will take 224 days or more to complete is
    1. near zero

b.   0.0126

c.     0.1587

d.   0.8413

e.    2.14

c (Project management techniques: PERT and CPM, moderate)

 

  1. An activity on a PERT network has these time estimates: optimistic = 2, most likely = 5, and pessimistic = 10. Its expected time is
    1. 5

b.   5.33

c.     5.67

 

  1. 17
  2. none of these

b (Project management techniques: PERT and CPM, moderate)

 

  1. An activity on a PERT network has these time estimates: optimistic = 1, most likely = 2, and pessimistic = 5. Its expected time is
    1. 2

b.   2.33

c.     2.67

  1. 8
  2. none of these

b (Project management techniques: PERT and CPM, moderate)

 

  1. An activity on a PERT network has these time estimates: optimistic = 2, most likely = 3, and pessimistic = 8. Its expected time and variance (if it is a critical activity) are

a.    3.67; 1

b.   3.67; 6

c.     4.33; 1

d.   4.33; 6

e.    none of these

a (Project management techniques: PERT and CPM, moderate)

 

  1. A local project being analyzed by PERT has 42 activities, 13 of which are on the critical path. If the estimated time along the critical path is 105 days with a project variance of 25, the probability that the project will be completed in 95 days or less is

a.    -0.4

b.   0.0228

c.     0.3444

d.   0.9772

e.    4.2

b (Project management techniques: PERT and CPM, moderate)

 

  1. A project being analyzed by PERT has 38 activities, 16 of which are on the critical path. If the estimated time along the critical path is 90 days with a project variance of 25, the probability that the project will be completed in 88 days or less is

a.    0.0228

b.   0.3446

c.     0.6554

d.   0.9772

e.    18

b (Project management techniques: PERT and CPM, moderate)

 

  1. A PERT project has 45 activities, 19 of which are on the critical path. The estimated time for the critical path is 120 days. The sum of all activity variances is 64, while the sum of variances along the critical path is 36. The probability that the project can be completed between days 108 and 120 is

a.    -2.00

b.   0.0227

c.     0.1058

d.   0.4773

e.    0.9773

d (Project management techniques: PERT and CPM, difficult)

 

  1. A contractor's project being analyzed by PERT has an estimated time for the critical path of 120 days. The sum of all activity variances is 81; the sum of variances along the critical path is 64. The probability that the project will take 130 or more days to complete is

a.    0.1056

b.   0.1335

c.     0.8512

d.   0.8943

e.    1.29

a (Project management techniques: PERT and CPM, moderate)

 

  1. Analysis of a PERT problem shows the estimated time for the critical path to be 108 days with a variance of 64. There is a .90 probability that the project will be completed before approximately day              .
    1. 98

b.   108

c.     109

d.   115

e.    118

e (Project management techniques: PERT and CPM, difficult)

 

  1. A project whose critical path has an estimated time of 120 days with a variance of 100 has a 20% chance that the project will be completed before day                           (rounded to nearest day).
    1. 98

b.   112

c.     120

d.   124

e.    220

b (Project management techniques: PERT and CPM, difficult)

 

  1. A project whose critical path has an estimated time of 820 days with a variance of 225 has a 20% chance that the project will be completed before day                           (rounded to nearest day).

a.    631

b.   689

c.     807

d.   833

e.    1009

c (Project management techniques: PERT and CPM, difficult)

 

  1. Contract requirements state that a project must be completed within 180 working days, or it will incur penalties for late completion. Analysis of the activity network reveals an estimated project time of 145 working days with a project variance of 400. What is the probability that the project will be completed before the late-payment deadline?

a.    0.0401

b.   0.4599

c.     0.8056

d.   0.9599

e.    near 1.0000, or almost certain

d (Project management techniques: PERT and CPM, difficult)

 

  1. Which of these statements regarding time-cost tradeoffs in CPM networks is true?
    1. Crashing is not possible unless there are multiple critical paths.
    2. Crashing a project often reduces the length of long-duration, but noncritical, activities.
    3. Activities not on the critical path can never be on the critical path, even after crashing.
    4. Crashing shortens the project duration by assigning more resources to one or more of the critical tasks.
    5. None of the above is tru

d (Cost-time trade-offs and project crashing, moderate)

 

  1. Which of the following statements regarding project management is true?
    1. Both PERT and CPM require that network tasks have unchanging durations.
    2. "Project crashing" shortens a project by assigning more resources to at least one critical task
    3. Crashing need not consider the impact of crashing an activity on other paths in the network.
    4. Project crashing is an optimizing technique.
    5. Crash cost depends upon the variance of the activity to be crashed.

b (Cost-time trade-offs and project crashing, moderate)

 

  1. Which of the following statements regarding time-cost tradeoffs in CPM networks is false?
    1. "Project Crashing" shortens project duration by assigning more resources to critical tasks.
    2. Crashing sometimes has the reverse result of lengthening the project duration.
    3. Crashing must consider the impact of crashing an activity on all paths in the network.
    4. Activities not on the critical path can become critical after crashing takes place.
    5. All of the above are tru

b (Cost-time trade-offs and project crashing, moderate)

 

  1. If an activity whose normal duration is 13 days can be shortened to 10 days for an added cost of

$1,500, the crash cost per period is

a.

$500

b.

$750

b.

$1,500

d.

$13,000

e.

$15,000

a (Cost-time trade-offs and project crashing, moderate)

 

  1. Two activities are candidates for crashing on a CPM network. Activity details are in the table below. To cut one day from the project's duration, activity                               should be crashed first, adding

                to project cost.

 

Activity

Normal Time

Normal Cost

Crash Duration

Crash Cost

One

8 days

$6,000

6 days

$6,800

Two

10 days

$4,000

9 days

$5,000

 

    1. One; $400

b.   One; $6,800

c.     Two; $1,000

d.   Two; $5,000

e.    One or two should be crashed; $1,400

a (Cost-time trade-offs and project crashing, moderate)

 

  1. If an activity whose normal duration is 15 days can be shortened to 10 days for an added cost of

$2,000, the crash cost per period is

a.    $400

b. $2,000

c.     $10,000

d.   $20,000

e.    $30,000

a (Cost-time trade-offs and project crashing, moderate)

 

  1. A network has been crashed to the point where all activities are critical. Additional crashing
    1. is unnecessary
    2. is impossible
    3. is prohibitively expensive
    4. may require crashing multiple tasks simultaneously
    5. can be done, but all critical tasks must be reduced in duration

d (Cost-time trade-offs and project crashing, moderate)

 

  1. Two activities are candidates for crashing on a CPM network. Activity details are in the table below. To cut one day from the project's duration, activity                               should be crashed first, adding

                to project cost.

 

Activity

Normal Time

Normal Cost

Crash Duration

Crash Cost

B

4 days

$6,000

3 days

$8,000

C

6 days

$4,000

4 days

$6,000

 

a.    B; $2,000

b.   B; $8,000

c.     C; $1,000

d.   C; $2,000

e.    C; $6,000

c (Cost-time trade-offs and project crashing, moderate)

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