Note: To calculate the expected project completion time and the variance/standard deviation of the critical project completion times you need only some of the expected activity times (t) and variances (0'2) . To save your time, you can enter 0 {zero} in the boxes of other activities. Optimistic U1 Go ll Large Project With Uncertain Activity Times Pessimistic Critical _; D 3 no ; Expected Time (15) Variance H q to 'hJ O) J J .5 N Round your answer in part (b) up to the nearest whole number. (b) The expected project completion time is [ 16 Jdays. Round your answer in part (c) to 2 decimal places. (c) The standard deviation of the critical project completion times is l 16 ldays. For parts (d), (e), use values for t and a that are rounded to 2 decimal places in your calculation. Round the 2 value to 2 decimal places. (d) What is the probability that the project can be completed in 45 days? We assume that the distribution of the project completion time is symmetric and bell-shaped. (Round all t, a, and 2 values to two decimal places.) The z-value used to calculate the probability is l 0.95 Express the probability in decimal form (i.e. 0.2347 instead of 23.47%) . The probability that the project can be completed in 45 days is l 0.04 l Question Help: El Message instructor Add Work Next