Given the following task time estimates (HOURS), Task E Predecessor b 60 A 31 40 B 15 20 25 17 25 41 A D 15 19 26 AB 20 25 30 CD 6 F 6 24 31 E G 11 18 22 F a. How long is the project length (round to two decimal places? Select] .and what is the project variance and standard deviation round to two decade b. What tasks form the critical path? Select Select) How much stack in activity D Set c. How much slack is there in activity C? Select d. What is the probability that the project will be completed in 137 hours? Select e. How many hours would be required to be 85% sure of completion? Select