Suppose a doctor measures the height, x, and head circumference, y, of 8 children and obtains the data below. The correlation coefficient is 0.893 and the least squares regression line is y = 0.170x + 12.691. Complete parts (a) and (b) below. Height, x 27.25 24.5 26.5 25.75 27.5 26.75 25.75 26.75 27.25 27.25 27 Head Circumference, y 17.3 16.9 17.2 17.0 17.4 17.1 17.1 17.4 17.3 17.4 17.3 (a) Compute the coefficient of determination, RZ. R2 = 0.6 % (Round to one decimal place as needed.)