(Answered) : 10. Activities on the critical path exhibit positive slack times. TRUE FALSE 11. The variance of project completion time e

10. Activities on the critical path exhibit positive slack times.

TRUE FALSE

11. The variance of project completion time equals the variances of all activities in the project.

TRUE FALSE

12. The expected activity time is the average of an activity’s optimistic and pessimistic times.

TRUE FALSE

13. Dummy activities are found in activity-on-arc (AOA) convention PERT/ CPM network models.

TRUE FALSE

14. The dummy activity has an expected time of zero by definition.

TRUE FALSE

15. Early start time ( ES ) is computed from right to left (backward pass)

TRUE FALSE

16. The project-group approach extends little or no formal authority to the project coordinator.

TRUE FALSE

17. The expected completion time