Relevant Competitive Tests:
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 25/36Correct Answer
D. 4 and 5/6
Correct Option: C. 3.5 and 25/36
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