1302Civil EngineeringMedium
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________?
A3.5 and 25/36
B3.5 and 5/6
C5 and 25/36
D4 and 5/6
Correct answer
A. 3.5 and 25/36
Explanation
The correct answer is 3.5 and 25/36.