d. Detailed 27. Calculation -PERT MEAN - Show Your Work 3 points Your project has four work packages: WORK COST ESTIMATES PACKAGE Optimistic Pessimistic Likely A - $ 40,000 $70,000 $ 47,000 B-$20,000 $50,000 $28,000 C-$ 15,000 $ 35,000 $20,000 D $ 25,000 $ 45,000 $30,000 Total: $100,000 $200,000 $125,000 What is your PERT Mean estimate for the TOTAL project? PERT Mean = P+4L+O/6 28. True (T) or False (F): Overhead is usually calculated as a percentage of labor costs. 29. The contract type which