Find the regression equation, letting the diameter be the predictor (x) variable. Find the best predicted circumference of a marble with a diameter of 1.2 cm. How does the result compare to the actual circumference of 3.8 cm? Use a significance level of 0.05. Baseball Basketball Golf |Soccer Tennis Ping-Pong Volleyball Diameter 7.4 24.4 4.2 21.9 7.0 3.9 20.8 Circumference 23.2 76.7 13.2 68.8 22.0 12.3 65.3 Click the icon to view the critical values of the Pearson correlation coefficient r. . . . The regression equation is y = .00472 + 3.14137 x. (Round to five decimal places as needed.) The best predicted circumference for a diameter of 1.2 cm is cm. (Round to one decimal place as needed.)