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Which of the following statement about project crashing is false?


A) The crash cost is greater than or equal to the normal cost of an activity.
B) The crash time is less than or equal to the normal time to complete an activity.
C) Reducing the time of an activity on the critical path automatically reduces total project duration.
D) It may not be possible to crash a particular activity.
E) Crashing may not lead to an overall reduction in costs for the project.

Correct Answer

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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

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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

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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

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Table 12-4 The following represents a project with known activity times. All times are in weeks. Table 12-4 The following represents a project with known activity times. All times are in weeks. -Using the data in Table 12-4, compute the slack time for activity D. A) 0 B) 5 C) 3 D) 6 E) None of the above -Using the data in Table 12-4, compute the slack time for activity D.


A) 0
B) 5
C) 3
D) 6
E) None of the above

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Development of a new deluxe version of a particular software product is being considered. The activities necessary for the completion of this are listed in the table below (Time in weeks). Development of a new deluxe version of a particular software product is being considered. The activities necessary for the completion of this are listed in the table below (Time in weeks). (a) What is the project completion date? (b) What is the total cost required for completing this project on normal time? (c) If you wish to reduce the time required to complete this project by one week, which activity should be crashed, and how much will this increase the total cost? (a) What is the project completion date? (b) What is the total cost required for completing this project on normal time? (c) If you wish to reduce the time required to complete this project by one week, which activity should be crashed, and how much will this increase the total cost?

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(a) Project completion time = ...

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Figure 12-1 Figure 12-1 -Given the network shown in Figure 12-1, assume that completion of B is delayed by two days. What happens to the project? A) The critical path is extended by two days. B) The start of activity F is delayed by two days. C) The start of activity E is delayed by two days. D) All of the above E) None of the above -Given the network shown in Figure 12-1, assume that completion of B is delayed by two days. What happens to the project?


A) The critical path is extended by two days.
B) The start of activity F is delayed by two days.
C) The start of activity E is delayed by two days.
D) All of the above
E) None of the above

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Figure 12-1 Figure 12-1 -Given the network shown in Figure 12-1, assume that completion of A is delayed by two days. What other activities are impacted? A) B B) D C) E D) C E) None of the above -Given the network shown in Figure 12-1, assume that completion of A is delayed by two days. What other activities are impacted?


A) B
B) D
C) E
D) C
E) None of the above

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The optimistic time is the greatest amount of time that could be required to complete an activity.

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The expected completion time and variance of an activity is approximated by the normal distribution in a PERT analysis.

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Table 12-6 Table 12-6 -What is the variance of Table 12-6's critical path? A) 5.222 B) 4.364 C) 1.362 D) 5.144 E) 2.362 -What is the variance of Table 12-6's critical path?


A) 5.222
B) 4.364
C) 1.362
D) 5.144
E) 2.362

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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

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Your company is considering submitting a bid on a major project. You determine that the expected completion time is 150 weeks and the standard deviation is 10 weeks. It is assumed that the normal distribution applies. You wish to set the due date for the project such that there is a 95 percent chance that the project will be finished by this time. What due date should be set?


A) 108.0
B) 160.4
C) 166.5
D) 135.0
E) None of the above

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The identification of the project activities and their time, cost, resource requirements, predecessors, and person(s) responsible is called PERT planning.

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In PERT, we assume that


A) the times to complete individual activities are known with certainty.
B) all activities are carried out by staff from our own organization.
C) the total cost of a project is independent of the time to complete the project.
D) the total time to complete all activities on the critical path is described by a normal distribution.
E) None of the above

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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

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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

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Table 12-4 The following represents a project with known activity times. All times are in weeks. Table 12-4 The following represents a project with known activity times. All times are in weeks. -Using the data in Table 12-4, what is the minimum possible time required for completing the project? A) 8 B) 12 C) 18 D) 10 E) None of the above -Using the data in Table 12-4, what is the minimum possible time required for completing the project?


A) 8
B) 12
C) 18
D) 10
E) None of the above

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A PERT/CPM network is a graphical display of a project that connects activities.

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Given: Given: Determine: (a) the critical path. (b) the probability that the project will be completed in 22 weeks. Given: Determine: (a) the critical path. (b) the probability that the project will be completed in 22 weeks. Determine: (a) the critical path. (b) the probability that the project will be completed in 22 weeks.

Correct Answer

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(a) Critical path is A-C-F. Ex...

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