Total Product 66 15 ...----u.... 0 1 2 3 4 5 6 7 8 Labor (units) Use the diagram in Figure 111 to answer the following questions: (1) Determine the marginal product (MP) for the fifth (5th) unit of labor. (2) Determine the marginal product (MP) of the eighth (8th) unit of labor. (3) At What unit of labor does diminishing marginal productivity set in? (4) What is the average product of the fourth (4th) worker? (5) What is the average product of the eighth (8th) worker