please help me work the solution by also showing the steps and explaining, thanm you so much

3 3 1 S 4 1 34. A project has the following activities and related data: Activity Time (weeks) Most Most Most Crash Immediate Et) V(t) Maximum Activity Cost Predecessor Optimistic likely Pessimistic Crashable (a) (m) (b) (5000) /week weeks A None 1 11 B None 4 6 A 5 6 7 1 2 D A 4 5 12 2 E B 1 6 11 2 1 F B 1 2 15 3 1 G CD 2 4 6 6 2 H E, F 2 2 1 34a. (20 points) Compute the Expected Value Et) and Variance Vt) for all activities in the above list. (5 points deducted for any error). 34b. (20 points) Draw the PERT chart, identify all critical path, and compute the variance for each path. (5 points deducted for any error). Hint: there are 3 critical paths. 1