If necessary, round your answer in part (b) to the nearest whole number. (b) The expected project completion time is [: days. Round your answer in part (c) to 2 decimal places. (c) The standard deviation of the project completion times is For part (d), use values of t and a from parts (b)-(c). (d) What is the probability that the project can be completed in 48 days? We assume that the distribution of the project completion times is symmetric and bellv shaped. Round the zscore to 2 decimal places. The zscore used to calculate the probability is C]. Express the probability in decimal form with 4 decimal places (i.e. 0.2347 instead of 23.47%) . The probability that the project can be completed in 48 days is :1- Large Project With Uncertain Activity Times Optimistic Most Activity Probable Pessimistic Critical Expected Time Variance (a) (m) (b) Path? (t) (02) A 5 11 23 No B 4 7 22 No C 6 9 12 Yes D 3 6 15 Yes E 6 12 30 No F 6 12 30 Yes G 4 10 28 No H 6 9 12 Yes 5 8 11 Yes C 5 11 23 No K 5 8 11 No- (a) The following table contains the optimistic, most probable, and pessimistic activity time estimates (in days) for a large proiect. Fill in the expected activity time and variance columns. Note: To calculate the expected project completion time and the varianoelstandard deviation of the project completion times you need only some of the expected activity times (t) and variances (o2) . To save your time, you can enter 0 (zero) in the boxes of other activities