PLEASE SHOW THE SOLUTION STEP BY STEP CLEARLY

QUESTION 2 (20 MARKS) Absan Sdn. Bhd. is a house developer company. Table 2.1 shows activities and predecessor to build one complete unit of a single-storey house. Table 2.2 shows time estimates in weeks for each activity and crash cost per week. SEMM/SKMM 3813 Table 2.2: Activity time to develop one unit single-storey house Based on the given data; a) Construct a network diagram and estimate the expected project completion time. Identify also the critical path. (6 marks) b) Analyse the probability that the project can be completed in 35 weeks. (Use APPENDIX IV as a reference for calculating Z value and probability.) (6 marks) c) If the project needs to be ghorten by two (2) weeks, determine the minimum additional cost required. Construct a revised project network diagram by showing a new critical path after crashing. (8 marks)