Income (in 1960 dollars/person) for European countries and the percent of the labor force (in %) that works in agriculture in 1960 are in the table below (OECD economic development,' 2013). a) State the random variables. rv X= Select an answer X, percent of labor in agriculture (in %) Y, income (in 1960 dollars/person) 25 839 20 977 14 1644 20 1013 15 1035 18 1049 44 238 11 810 6 1005 42 290 15 1242 11 1361 23 681 4 1105 79 177 27 504 56 324 of Select an answer of Select an answer rv Y= Select an answer b) Make a scatterplot of X versus Y in StatCrunch (optional). Why do we wish to sketch a scatterplot? Select an answer c) Find the equation of the best-fitting line (the least squares regression equation). Round values to 2 decimal places. Include the restricted domain. equation: ? = restricted domain: + * X %