Question 4 (6 Marks) The following table summarizes the earned value information for project a. Term Amount Earned Value EV Planned Value PV) Actual Cost AC Using Earned Value Management reply the following questions: i) What is the schedule variance and cost performance index? ii) Is the project over budget or not? Why? iii) Is the project behind the schedule? Why? Question 5 (4 Marks) Briey explain the following Quality Tools: i) Cause-andeffect diagram ii) Control chart