The variances and expected activity durations are calculated by means of equations (8) and

(10) and are given in Table 15.6 . Note that the expected activity durations are identical to the values that were used in the critical path analysis performed in Example 15.3 . Thus, the critical path A-C-E-I-J, which was identified earlier in Figure 15.15 , will be the focus of our determination of the project completion time distribution.