Harrison, Carla, and Fred are housepainters. Harrison and Carla can paint 100 square feet per hour using a standard paintbrush, and Fred can paint 80 square feet per hour. Any of the three can paint 200 square feet per hour using a roller. a. What is the average labor productivity, in terms of square feet per painter-hour, for the three painters taken as a team given the number of rollers available? Assume that the three painters always work the same number of hours. Instructions: Enter your responses for output per painter-hour rounded to one decimal place. Number of Output by team rollers (square foot) Output per painter-hour (square foot) 0 1 2 3 4 Are there diminishing returns to capital? (Click to select) b. An improvement in paint quality increases the area that can be covered per hour (by either brushes or rollers) by 20 percent. How does this technological improvement affect your answers to part a? Are there diminishing returns to capital? (Click to select) b. An improvement in paint quality increases the area that can be covered per hour (by either brushes or rollers) by 20 percent. How does this technological improvement affect your answers to part a? Instructions: Enter your responses as whole numbers. Number of Output by team rollers (square foot) Output per painter-hour (square foot) 0 1 2 3 4 Are there diminishing returns to capital? (Click to select) Does the technological improvement increase or reduce the economic value of an additional roller? The economic value of an additional roller would be [(Click to select)