Question: 4. Using the same example in Q 3 part II, and provided that optimistic, most likely, and pessimistic time of each activity is given in

4. Using the same example in Q 3 part II, and provided that optimistic, most likely, and pessimistic time of each activity is given in the table below, answer the following questions: t Activity Predecessor Duration Optimistic Most Pessimistic time a likely time b time Variance m 6 5 4 D WNANA 000 3 2.17 | 3.33 3.5 | 1.5 2.17 11 .25 44 .25 .25 .25 E F 3 4 8 5 6 D & E 4 a. Compute the expected times of the activities using PERT method b. What is the project variance? c. What is its standard deviation? English (US)

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