Problem 9-10 (Algorithmic) The following estimates of activity times in days) are available for a small project: Activity Optimistic Most Probable Pessimistic A 2 3 4 B 9 10 11 C 7 7.5 11 D 5 9 11 E 6 8 9 F 3 4 5 a. Compute the expected activity completion times and the variance for each activity. If necessary, round your answer to two decimal places. Most Expected Times Activity Optimistic Probable Pessimistic Variance A 2 3 4 B 9 10 11 7 7.5 11 D 5 9 11 E 6 8 9 F 3 4 5 b. An analyst determined that the critical path consists of activities B-D-F. Compute the expected project completion time and the variance. If necessary, round your answer to two decimal places. Expected project completion time: Variance of projection completion time