2.7 An article in The Economist (July 3, 2010) stated that the number of people in prison is 154 per 100,000 in England and Wales, 96 per 100,000 in France, 87 per 100,000 in Germany, and 753 per 100,000 in the United States Explain how to use the relative risk to compare the U.S. rate to the others.