The table below defines the activities within a small project. Activity Completion Time (weeks) Immediate predecessor A 2 - B 3 - C 4 A D 3 B,A E 8 D,C F 3 C G 2 E H 3 F,G a. Draw the network diagram. [10] b. Calculate the overall project completion time and identify which activities are critical. [2] c. What is the slack (float) time associated with each of the non-critical activities. [2] Question 2 Construct a precedence network diagram based on the following: The predecessors to Activity Z2 are Activities L, C and R. The successors to Activity B are Activities E1, S, W and D2. Activity E1 also depends on Activity M. Activity U and F follow Activities W and D2, and precede Activities E and R1. Activity Y follows Activities C and R, and followed by Activity L. Activities D, M, and B start the project. Activity C can start when Activities D, E1 and S are completed. Activity R cannot begin until Activity W is finished. Activity I follows Activity D and precedes Activity L. Activity E follows Activities C and R. [10]