Given: In a network the critical path is determined by six activities B, D, F, K, S, and T. The standard deviation () values for each activity are given in the table below. Activit B D F R S T o 5/ 11 5/ 6 6 6 21 6 11 6 51 6 Req'd: If the early finish for the network is calculated to be 15 days, calculate the probability of completing the project in 12 days. Value (z) 1.0 2.0 2.5 1.5 Area 0.3413 0.4332 0.4772 0.4938