Network models such as PERT and CPM are used

1. to plan large and complex projects.

2. to schedule large and complex projects.

3. to monitor large and complex projects.

4. to control large and complex projects.

5. for all of the above.

The primary difference between PERT and CPM is that

1. PERT uses one time estimate.

2. CPM has three time estimates.

3. PERT has three time estimates.

4. with CPM, it is assumed that all activities can be performed at the same time.

The earliest start time for an activity is equal to

1. the largest EF of the immediate predecessors.

2. the smallest EF of the immediate predecessors.

3. the largest ES of the immediate predecessors.

4. the smallest ES of the immediate predecessors.

The latest finish time for an activity is found during the backward pass through the network. The latest finish time is equal to

1. the largest LF of the activities for which it is an immediate predecessor.

2. the smallest LF of the activities for which it is an immediate predecessor.

3. the largest LS of the activities for which it is an immediate predecessor.

4. the smallest LS of the activities for which it is an immediate predecessor.

When PERT is used and probabilities are found, one of the assumptions that is made is that

1. all activities are on the critical path.

2. activity times are independent.

3. all activities have the same variance.

4. the project variance is equal to the sum of the variances of all activities in the project.

5. all of the above.

In PERT, the time estimate b represents

1. the most optimistic time.

2. the most likely time.

3. the most pessimistic time.

4. the expected time.

5. none of the above.

In PERT, slack time equals

1. $\text{ES}+t.$

2. $\text{LS}-\text{ES}.$

3. 0.

4. $\text{EF}-\text{ES}.$

5. none of the above.

The standard deviation for the PERT project is approximately

1. the square root of the sum of the variances along the critical path.

2. the sum of the critical path activity standard deviations.

3. the square root of the sum of the variances of the project activities.

4. all of the above.

5. none of the above.

The critical path is

1. the shortest path in a network.

2. the longest path in a network.

3. the path with the smallest variance.

4. the path with the largest variance.

5. none of the above.

If the project completion time is normally distributed and the due date for the project is greater than the expected completion time, then the probability that the project will be finished by the due date is

1. less than 0.50.

2. greater than 0.50.

3. equal to 0.50.

4. undeterminable without more information.

If activity A is not on the critical path, then the slack for A will equal

1. $\text{LF}-\text{EF}.$

2. $\text{EF}-\text{ES}.$

3. 0.

4. all of the above.

If a project is to be crashed at the minimum possible additional cost, then the first activity to be crashed must be

1. on the critical path.

2. the one with the shortest activity time.

3. the one with the longest activity time.

4. the one with the lowest cost.

______________ activities are ones that will delay the entire project if they are late or delayed.

PERT stands for ______________ .

Project crashing can be performed using a ______________ .

PERT can use three estimates for activity time. These three estimates are ______________ , ______________ , and ______________ .

The latest start time minus the earliest start time is called the ______________ time for any activity.

The percent of project completed, value of work completed, and actual activity costs are used to ______________ projects.