question_answer

Time estimates of an activity in a PERT network are:

Optimistic time \[{{t}_{0}}\] = 9 days pessimistic time \[{{t}_{p}}\] = 21 days and most likely time tg = days.

The time approximates probability of completion of this activity in 13 days is:

A) 16%                             

B) 34%

C) 50%                             

D) 84%