I need help finding d, e, and f.

Ross Hopkins, president of Hopkins Hospitality, has developed the tasks, durations, and predecessor relationships in the following table for building new motels. a Activity B Time (weeks) m b 4 9 12 2 9 24 8 14 16 4 6 10 1 3 4 6 9 21 Immediate Predecessor(s) Activity G A H 1 A J B K CE Time (weeks) a m b 3 3 4 1 1 1 7 7 7 4 7 3 3 4 mm Immediate Predecessor(s) CE F F DGH 12 E F a) The expected (estimated) time for activity C is 13.33 weeks. (Round your response to two decimal places.) b) The variance for activity C is 1.77 weeks. (Round your response to two decimal places.) c) Based on the calculation of the estimated times, the critical path is A-C-F-H-J-K d) The esimated time for the critical path is weeks (round response to two decimal places). e) The activity variance along the critical path is weeks (round response to two decimal places). f) The probability that Hopkins Hospitality will finish the project in 40 weeks is round response to three decimal places). (enter as a probability and