Classrooms cleaned per evening 0 3 7 12 16 17 17 16 5. What is the average product of four janitors? References: Web file/PDF/Book . Principles of Economics (Saylor Books) Chapter 8Answer the following Case Studies, be direct, and neat on your response (pls. follow the number series): 1. Which of the following would be considered long-run choices? Which are short-run choices? A. A dentist hires a new part-time dental hygienist. B. The local oil refinery plans a complete restructuring of its production processes, including relocating the plant. C. A farmer increases the quantity of water applied to his or her fields. D. A law partnership signs a 3-year lease for an office complex. E. The university hires a new football coach on a 3-year contract. 2. "There are no fixed costs in the long run." Explain. 3. Business is booming at the local Mcdonald's restaurant. It is contemplating adding a new grill and frenchfr machine, but the day supervisor suggests simply hiring more workers. How should the manager decide which alternative to pursue? 4. The table below shows how the number of university classrooms cleaned in an evening varies with the number of janitors: What is the marginal product of the second janitor? Janitors per evening 0 2 6