1.

The optimistic time, the pessimistic time and the most likely time of a job are 6, 13 and 8 days respectively. The variance for this job is ________

A. 1.145 to 5.56
B. 4.25 to 1.52
C. 2.45 to 3.54
D. 1.34 to 1.37
Answer» E.


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