If an activity has its optimistic, most likely and pessimistic times a – McqOptions

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1.	If an activity has its optimistic, most likely and pessimistic times as 2, 4 and 9 respectively, then its expected time and variance are ____ and ______ respectively?
A.	4.5 and 7/6
B.	7 and 49/36
C.	4.5 and 49/36
D.	7 and 7/6
Answer» D. 7 and 7/6

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