4 An activity on the critical path of a project was scheduled to be completed within 12 weeks, with a budget of $8,000. During a performance review, which took place 7 weeks after the activity was initiated, it was found that 50% of the work had already been completed and that the actual cost was $4,500.

a. Calculate the EV of the activity.

b. Calculate the CI and SI for the activity.

c. Calculate the expected BAC using the original estimate approach.

d. Calculate the expected BAC using the revised estimate approach.

e. Compare and discuss the results obtained in parts

(c) and (d).