need variance (partb) and part c done. please round to two decimal places. part a is complete.

Use the network diagram and the following project data. Network diagram Activity A B Optimistic Time Most Likely Time Pessimistic Time (weeks) (weeks) (weeks) 9 10 12 4 9 16 3 5 6 5 7 9 5 7 12 5 8 9 5. 8 12 3 3 3 D E F 8 G H 3 Calculate the expected time for each of the project activities. (Round your answers to 2 decimal places, eg. 1.75.) Expected Activity Time A 10.17 B 9.33 4.83 D 7 E 7.5 F 7.67 G 8.17 3 H Calculate the variance for each of the project activities. (Round your answers to 2 decimal places, e.g. 1.75.) Activity Variance A B D E F G H Evaluate the connected paths through the diagram to determine the expected project completion time. (Round your answer to 2 decimal places, eg. 1.75.) Expected project completion time weeks