Use the following network with activities and times estimated in days to answer the questions. {2} 'what are the critical path activities? [Enter your answers as a comma-separated list.) ABEHJT x {b) What is the expected time (in days) to complete the project? [ ]x days {c) Based only on the critical path, what is the probability the project will take more than 28 days to complete? [Round your answer to four decimal places.) Probabilities should be betwesn 0 and 1