5 The table below lists three time estimates and the immediate predecessor(s) for each activity in a construction projed that is to be scheduled using PERT. The three time estimates (in weeks) are in the order optimistic time, most likely time, and pessimistic time Activity 1 2 3 4 5 7 8 Time estimates (weeks) 1,2,3 3,5,7 5,7,9 5,7,12 1,2,3 2, 3, 4 7.9.11 1.3.8 Immediate predecessor 1 1 2 3 4,5 6.7 6 3 The total variance of the critical path is equal to A. 4.39 B. 3.82 C.2.36 D. 1.54 Guardar todas las respues Haga clic en Guardar y enviar para guardar y enviar. Haga clic en Guardar todas las respuestas para guardar todas las respuestas In relation to the question before. What is the probability that the project will be completed within 20 weeks? A. 63% B. 16% C.31% D.45%