The optimistic, most likely and pessimistic time estimates of an activity are 5, 10 and 21 days respectively. What are the expected time and standard deviation ?

The optimistic, most likely and pessimistic time estimates of an activ

1.	The optimistic, most likely and pessimistic time estimates of an activity are 5, 10 and 21 days respectively. What are the expected time and standard deviation ?
A.	12, 3
B.	11, 4
C.	11,
D.	10, 16
Answer» D. 10, 16

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The optimistic, most likely and pessimistic time estimates of an activity are 5, 10 and 21 days respectively. What are the expected time and standard deviation ?

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