Consider the table below, which has data on insurance status and medical expenditures for different types of professors at Hypothetical University (HU), economics & mathematics professors. Assume that there are an equal number of economics and math professors. Assume further that econ professors all have the same level of health and math professors all have the same level of health. In 2000, every professor was offered a full insurance contract with no premium. In 2001, HU charged any employee who wanted to keep health insurance the actuarially fair premium based on 2000 expenditures. This premium would be equal to _ and, as a result, _professors dropped their coverage in 2001. 2000 2001 Insured? Avg. Expenditures Insured? Avg. Expenditures Economics Professors Yes $20,000 ??? $20,000 Math Professors Yes $10,000 $7,000 X O $20,000; econ $15,000; math O $20,000; math O $15,000; econ