Show transcribed image text 院: 3.24 Using PERT, Harold Benson was able to determine that the expected project completion time for the construction of a pleasure yacht is 21 months, and the project variance is 4. a) What is the probability that the project will be completed in 17 b) What is the probability that the project will be completed in 20 c) What is the probability that the project will be completed in 23 d) What is the probability that the project will be completed in 25 e) What is the due date that yields a 95% chance of completion? PX months? months? months? months?