4. In 2007, the average national income in Chile was $26,000, and in Uruguay, it was $22,300. In which country is the average person in the bottom 50%, middle 40%, and tap 10% better oil\"? Why? Be precise and provide factual numbers to support your answer. To answer this question, you need to use the information available in widworld. (Hint: in each country compute the average income for the top 10%, the middle 40%, and the bottom 50%)