Using the data in nhanes.dat, fit a straight line regression model predicting y =triceps skin fold (variable

Question:

Using the data in nhanes.dat, fit a straight line regression model predicting y =triceps skin fold (variable bmxtri) from x = body mass index (variable bmxbmi).You plotted these data in Exercise 15 of Chapter 7. Give a 95% CI for the slope, and calculate R2 for these data. Sketch your regression line on the plot.