Use the the world SAS data set created in Exercise 2.14 for this problem as in the above problem. In order to study the effects of urbanization on crude death and birth rates, obtain side-by-side scatter plots of these variables against urban population variable. Identify the points by grouping them by the technology category variable. Change the attributes of the plot symbol so that they are filled circles of size 5 pixels. Also overlay each scatter plot with a loess smoother curve that will show the trend more clearly, making sure that the grouping variable is ignored for this fit and that a quadratic is used for each local regression. Also choose a dashed line type and magenta color for the smoother lines.