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EXAMPLE C13 Consider the network shown in Fig. 14.34. The three time estimates, the expected activity durations and the variances are shown along the arrows. The earliest expected times and the latest allowable occurrence times are computed and put along the nodes. What is the probability of completing the project in (0) 12 days (it) 14 days (ii) 10 days ? [ITU. Karnataka B.E. June, 2011; H.P.U.B.Tech. (Mech.) Nov, 2010) 673 1-4-7 E = 2 L=0 L-2 E=0 1-2-3 1.-2,0? = 1/9 1 1 =4,0? = 1 1-2-9 1.-3. 02 = 16/9 =3, o' = 16/9 1-2-9 E = 9 L = 9 2-3-4 1-3, P. 1/9 E = 12 L-12 EXAMPLE C13 Consider the network shown in Fig. 14.34. The three time estimates, the expected activity durations and the variances are shown along the arrows. The earliest expected times and the latest allowable occurrence times are computed and put along the nodes. What is the probability of completing the project in (0) 12 days (it) 14 days (ii) 10 days ? [ITU. Karnataka B.E. June, 2011; H.P.U.B.Tech. (Mech.) Nov, 2010) 673 1-4-7 E = 2 L=0 L-2 E=0 1-2-3 1.-2,0? = 1/9 1 1 =4,0? = 1 1-2-9 1.-3. 02 = 16/9 =3, o' = 16/9 1-2-9 E = 9 L = 9 2-3-4 1-3, P. 1/9 E = 12 L-12