Question: Question 4. Consider the project network given in the below figure where the expected duration and the variance (in parenthesis) values of activities are shown

Question 4. Consider the project network given in

Question 4. Consider the project network given in the below figure where the expected duration and the variance (in parenthesis) values of activities are shown on the arcs. Answer questions a-e. Show your work. (4 points each) 18 (2) 2 8 (1) 9 (3) 7 (2) 20 (4) 6 (2) 7 6 (1) 5 (2) 7 (2) 10 (4) 3 12 (1) 7(2) 00 a. What is the expected earliest time for event 7? b. What is the expected latest time for event 5? c. What is the free float for activity (6,8)? d. Assuming that activities are independent and that the central limit theorem applies, what is the probability that event 7 will take place on the 33rd day or earlier

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