7x Problem 3.20 Question Help Expected Time Activity Variance A 10 1 B 10.67 4 C 9.67 .44 D 9.5 .69 b) The expected completion time of the critical path = 20.17 weeks (round your response to two decimal places). The expected completion time of the path other than the critical path = 19.67 weeks (round your response to two decimal places). c) The variance of the critical path = 4.69 weeks (round your response to two decimal places). The variance of the path other than the critical path = 1.44 weeks (round your response to two decimal places). d) If the time to complete the activities on the critical path is normally distributed, then the probability that the critical path will be finished in 23 weeks or less = .90 (enter as a probability and round your response to two decimal places). e) If the time to complete the activities on the non critical path is normally distributed, then the probability that the non critical path will be finished in 23 weeks or less =(enter as a probability and round your response to two decimal places)