Ch. 15 Test Bank

Given an activity's optimistic, most likely, and pessimistic time estimates of 2, 5, and 14 days respectively, compute the PERT expected activity time for this activity. A) 6 B) 7 C) 9 D) 5 E) None of the above

A) 6

The expected time in PERT is A) a weighted average of the most optimistic time, most pessimistic time, and four times the most likely time. B) the modal time of a beta distribution. C) a simple average of the most optimistic, most likely, and most pessimistic times. D) the square root of the sum of the variances of the activities on the critical path. E) None of the above

A) a weighted average of the most optimistic time, most pessimistic time, and four times the most likely time.

Activity B of a project has a budgeted cost of $50,000 and is 30% complete. The actual cost of the activity is $12,000. What is the activity difference? A) -15,000 B) -3,000 C) 0 D) 3,000 E) 15,000

B) -3,000

25) Consider a project that has an expected completion time of 50 weeks and a standard deviation of 9 weeks. What is the probability that the project is finished in 57 weeks or fewer? (Round to two decimals.) A) 0.68 B) 0.78 C) 0.22 D) 0.32 E) None of the above

B) 0.78

Given an activity's optimistic, most likely, and pessimistic time estimates of 4, 12, and 18 days respectively, compute the PERT variance for this activity. A) 2.33 B) 5.44 C) 8.00 D) 64.00 E) None of the above

B) 5.44

In a PERT network, the latest (activity) start time is the A) earliest time that an activity can be finished without delaying the entire project. B) latest time that an activity can be started without delaying the entire project. C) earliest time that an activity can start without violation of precedence requirements. D) latest time that an activity can be finished without delaying the entire project. E) None of the above

B) latest time that an activity can be started without delaying the entire project.

The critical path of a network is the A) path with the least variance. B) path with zero slack. C) path with the most activities. D) path with the largest variance. E) None of the above

B) path with zero slack.

PERT stands for A) probabilistic evaluation and review technique. B) program evaluation and review technique. C) probability of expected run times. D) program of expected run times. E) project evaluation and review technique.

B) program evaluation and review technique.

Given an activity's optimistic, most likely, and pessimistic time estimates of 3, 7, and 11 days respectively, compute the expected time for this activity. A) 5 B) 6 C) 7 D) 12 E) None of the above

C) 7

Given an activity's optimistic, most likely, and pessimistic time estimates of 4, 6, and 14 days respectively, compute the PERT expected activity time for this activity. A) 8 B) 6 C) 7 D) 9 E) None of the above

C) 7

Given an activity's optimistic, most likely, and pessimistic time estimates of 2, 10, and 20 days respectively, compute the PERT variance for this activity. A) 3 B) 6 C) 9 D) 18 E) None of the above

C) 9

In a PERT network, the earliest (activity) start time is the A) earliest time that an activity can be finished without delaying the entire project. B) latest time that an activity can be started without delaying the entire project. C) earliest time that an activity can start without violation of precedence requirements. D) latest time that an activity can be finished without delaying the entire project. E) None of the above

C) earliest time that an activity can start without violation of precedence requirements.

CPM A) assumes we do not know ahead of time what activities must be completed. B) assumes that activity time estimates follow the normal probability distribution. C) is a deterministic network technique that allows for project crashing. D) is a network technique that allows three time estimates for each activity in a project. E) None of the above

C) is a deterministic network technique that allows for project crashing.

PERT A) assumes that we do not know ahead of time what activities must be completed. B) assumes that activity time estimates follow the normal probability distribution. C) is a network technique that uses three time estimates for each activity in a project. D) is a deterministic network technique that allows for project crashing. E) None of the above

C) is a network technique that uses three time estimates for each activity in a project.

Given an activity's optimistic, most likely, and pessimistic time estimates of 3, 5, and 13 days respectively, compute the expected time for this activity. A) 3 B) 4 C) 5 D) 6 E) None of the above

D) 6

Reducing the overall activity time is based on which of the following steps? A) crashing activities with the lowest overall crash cost B) crashing activities with the lowest overall normal cost C) crashing activities on the critical path based on lowest overall cost D) crashing activities on the critical path based on lowest cost/week E) crashing activities with the lowest cost/week

D) crashing activities on the critical path based on lowest cost/week

CPM stands for A) critical path management. B) critical project management. C) critical project method. D) critical path method. E) centralized project management.

D) critical path method.

The critical path of a network is the A) shortest time path through the network. B) path with the fewest activities. C) path with the most activities. D) longest time path through the network. E) None of the above

D) longest time path through the network.

The crash time of an activity represents A) the normal time to complete an activity. B) the most pessimistic time to complete an activity. C) the incremental decrease in the time to complete an activity. D) the shortened activity time. E) None of the above

D) the shortened activity time.

Which of the following questions can be answered by PERT? A) When will the entire project be completed? B) What is the probability that the project will be completed by a specific date? C) What are the critical activities? D) What are the noncritical activities? E) All of the above

E) All of the above

PERT/Cost allows a manager to do which of the following? A) plan B) schedule C) monitor D) control E) All the above

E) All the above

Slack time in a network is the A) amount of time that an activity would take assuming very unfavorable conditions. B) shortest amount of time that could be required to complete the activity. C) amount of time that you would expect it would take to complete the activity. D) difference between the expected completion time of the project using pessimistic times and the expected completion time of the project using optimistic times. E) amount of time that an activity can be delayed without delaying the entire project.

E) amount of time that an activity can be delayed without delaying the entire project.