1. Calculate the "Expected Time'T {TE} for each of the tasks in this Work Breakdown Structure Task Predecessors Opt. ML a I None 4 I 4 10 b I None ' 2 I 9 10 I: None ' 1 I 5 39 d A ' U I 1 2 e I B ' 1 2 3 I f C, E ' 4 I 8 12 2. Draw that PERT chart and find the critical path and project length using TE