the following is for project management. Please help

b) Describe how each of the following changes to task durations (on their own) would affect the critical path and project duration. Explain your answers clearly. (6 marks) i) Task E - reduced to 2 weeks i) Task F - increased to 6 weeks iii) Task A - increased to 10 weeks c) By making use of the normal table provided calculate: (3 marks) I.What is probability that project is completed within 30 weeks? 11. what is probability that project is completed within 23 weeks? III. By what date is management 97 percent sure completion will occur? b) Describe how each of the following changes to task durations (on their own) would affect the critical path and project duration. Explain your answers clearly. (6 marks) i) Task E - reduced to 2 weeks i) Task F - increased to 6 weeks iii) Task A - increased to 10 weeks c) By making use of the normal table provided calculate: (3 marks) I.What is probability that project is completed within 30 weeks? 11. what is probability that project is completed within 23 weeks? III. By what date is management 97 percent sure completion will occur