Problem 9-12 (Algorithmic) Assume that the activity time estimates (in days) for the swimming pool construction project are as follows: A C F H Start Finish B D G E Activity Optimistic Most Probable Pessimistic A 7 CO 15 C W 8 D N 2 E LD F N Co N 17 H W Co a. What are the critical activities? If necessary, round your answers to two decimal places. If your answer is zero, enter "0".Activity Expected Time Variance A B anmon H Earliest Latest Earliest Latest Critical Activity Start Start Finish Finish Slack Activity A E G Hb. What is the expected time to complete the project? If necessary, round your answer to two decimal plaoes. Eh) = E days c. Based onlyr on critical path, what is the estimated probability that the project can be completed in 25 or fewer days? Variance = S . If necessary, round your answers to two decimal places. Using the normal distribution, 2 : S . If necessary, round your answers to two decimal places. If negative answer is required, enter the minus sign before the number. Probability of 25 days or less is E . If necessary, round your answers to four deCimal places. Note: Use Appendix B to identify the probability