According to an article in The Economist, citizens of the United States consider college to be the best investment in the country. However, this view is based on broad averages, which obscure the difference among the country’s 7,800 higher-education institutions. Students are not assigned to colleges randomly, which makes it difficult for economists to determine which schools are worth the cost. For example, are Harvard graduates successful because they went to the institution or would they have succeeded no matter where they studied? For the following questions, assume that no factor affects the demand for high quality educational services other than prices. a. If universities increased the prices of educational services, can we conclude that, for students, the service was a normal good? b. If universities decreased the prices of educational services, can we conclude that, for students, the educational service is an inferior good?