If an activity has its optimistic, most likely and pessimistic times as 2, 3 and 7 respectively, then its expected time and variance are respectively___________________?

If an activity has its optimistic, most likely and pessimistic times as 2, 3 and 7 respectively, then its expected time and variance are respectively___________________?

A. 3.5 and 5/6
B. 5 and 25/36
C. 3.5 and 25/36
D. 4 and 5/6

Free float is mainly used to_________________?

Free float is mainly used to_________________?

A. identify the activities which can be delayed without affecting the total float of preceding activity
B. identify the activities, which can be delayed without affecting the total float of succeeding activity
C. establish priorities
D. identify the activities which can be delayed without affecting the total float of either the preceding or succeeding activities

Total float for any activity is defined as the difference between________________?

Total float for any activity is defined as the difference between________________?

A. its latest finish time and earliest start time for its successor activity
B. its latest start time and earliest start time
C. its latest start time and earliest finish time
D. its earliest finish time and earliest start time for its successor activity

Free float for any activity is defined as the difference between__________________?

Free float for any activity is defined as the difference between__________________?

A. its earliest finish time and earliest start time for its successor activity
B. its latest start time and earliest start time
C. its latest finish time and earliest start time for its successor activity
D. its earliest finish time and latest start time for its successor activity