(a) Draw a scatter diagram. Comment on the type of relation that appears to exist between x and y. (b) Given that x = 3.6667, s. = 2.4221, y = 3.8333, sy = 1.7985, and r = - 0.9519, determine the least-squares regression line. (c) Graph the least-squares regression line on the scatter diagram drawn in part (a). 2 3 5 6 6 5.7 5.6 5.0 2.8 1.8 2.1 (a) Choose the correct graph below. OA. O B. OC. OD. x 1 There appears to be a linear, negative | relationship. (b) y = - 0.707 x + 6.426 (Round to three decimal places as needed.) (c) Choose the correct graph below. O A. O B. OC. OD