Question 5 Not yet Given the activity time estimates below, what is the variance for Activity B? (round to 4 decimals as needed) Activity Optimistic Time Most Likely Time Pessimistic Time answered A 2.0 6.0 6.9 Points out of 1.00 B 2.0 4.1 4.1 Flag question 1.0 2.0 6.1 D 6.0 7.2 8.1 Select one: O a. None of the other options. Ob. 0.6669 O c.0.3500 O d. 0.7350 Oe. 0.2623 Of. 0.1225 Og. 0.7225 Oh 0.1225 Question 6 Not yet answered Points out of 1.00 Consider the following project with variable completion times Completion Time (weeks) Activity Predecessor(s) a m b Variance A None 2 5 5 8 1 Flag question B None 1 1 3 11 2.77 A 3 6 9 1 1 B, C 4 5 6 0.11 E CD 1 4 7 1 If you know the one and only critical path of this project is A-C-E, what are the mean and standard deviation of the project completion time? If you know the one and only critical path of this project is A-C-E, what are the mean and standard deviation of the project completion time? Select one: a. Mean = 23, SD = 3 b. Mean = 15, SD = 3 c. Mean = 15, SD = 1.732 d. Mean = 23, SD = 1.732