) Consider the R built in USArrests data. Create a pairwise scatterplot for all he variables. ) Which two variables have the most obvious linear relationship? Pick just one air; Plot its scatter plot; Fit a simple linear regression model. Add the regression ne to fit the data. Check the normality of the residual. Add a zero line to the esidual plot. Use ggplot2 package to draw a histogram of the urban population. Interpret