a) A large project usually involves a large number of activities. Management need some way to determine exactly what will need to be done, the expected time and its cost. i) What is a work breakdown structure (WBS) and how to develop it? ii) How is it useful for project planning? b) The Vice President (VP) of a local bank plans to establish a new direct marketing department. The VP in charge of the project had identified the major activities that would be required, the time estimated for each activity and the sequence of activities in the table below. i) Draw a precedence diagram using AOA. ii) Calculate the slack time of each activity. iii) Find the critical path. iv) Determine the expected length of the project. Expected time (weeks) Immediate predecessor Activity A: Locate new facilities B: Interview prospective staff 8 4 - C: Hire and train staff 9 B D: Select and order furniture 6 A E: Remodel and install phones 11 A F: Furniture received and set up 3 D G: Move in/startup 1 C,E,F