Which of these statements regarding time-cost tradeoffs in CPM networks is true?
Crashing shortens the project duration by assigning more resources to one or more of the critical tasks.
Which of the following statements regarding PERT analysis is true?
Only critical activities contribute to the project variances.
PERT analysis computes the variance of the total project completion time as:
The sum of the variances of all activities on the critical path.
The EF of an activity is the:
ES+ Activity Time
Which of the following statements regarding Gantt charts is true?
Gantt charts are visual devices that show the duration of activities in a project.
In a PERT network, non-critical activities that have little slack need to be monitored closely__________
because near-critical paths could become critical paths with small delays in these activities
The Beta distribution is used in project management to
calculate slack of activities on the critical path
An activity has an optimistic time of 15 days, a most likely time of 18 days, and a pessimistic time of 27 days. What is the expected time?
19
Basic assumption of PERT
no activity in the network must be repeated
___is the amount of time an individual activity in a network can be delayed without delaying the entire project.
slack time
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. Given the above scenario, which of the following is correct?
There are four paths in this network
WBS stands for which of the following project management tools?
Work Breakdown Structure
Dummy activities
are used when two activities have identical starting and ending events.
The critical path of a network is the__________
The longest time path through the network