Please Explain in Excel sheet along with formula shown for better understanding.

1. For this problem, (a) compute and enter the expected time and variance for each task in the table, and (b) state the Project Completion Time given the critical path is: A-B-E-G. But do NOT compute ES, EF, etc., or anything else not required. Round off values to 2 decimals. Task Immediate Optimistic Most Probable Pessimistic Predecessor Time (days) Time (days) | Time (days) te Ve 10 | 15 15 30 40 15 5 20 25 CD E. F 10