Question 3 18 marks Engineering Ltd wishes to undertake a project with duration, costs and relationships detailed in the table holnis, Overheads relating to the project are $70 per day. a. Identify the critical path and calculate the expected duration of the project. 6 marks b. What is the probability that the total project duration will exceed 35 days? 6 marks c. Ignoring optimistic and pessimistic estimate for activity durations, calculate the least cost duration for the project. 6 marks