1. a. Draw the activity-on-node (AON) project network associated with the following activities for a shipbuilding company project. Activity Immediate Predecessors Time (days) b. How long should it take to complete this project? c. What are the critical path activities? 2. The hull workshop in a shipyard has decided to make a contract for the construction of a 5000 Gross Tonnage bulk ship. The manager has been very concerned with the amount of time to complete several jobs. Some of her workers are not experienced in hull building. A list of activities and their optimistic completion time, the most likely time and the pessimistic completion time (all in days>) for a new contract are given in the following table. Times ACTIVITY Immediate Pred. x BD . HI 2 8 10 a. Determine the expected completion time and variance for each activity b. Determine the total project completion time and the critical path for the project c. Determine ES, d. EF, LS, LF and slack for each activity e. What is the probability that hull workshop will finish the project in 40 days or less