Suppose a doctor measures the height, x, and head circumference, y, of 11 children and obtains the data below. The correlation coefficient is 0.793 and the least squares regression y=0.214x+11.547. Complete parts (a) and (b) below. Height, x 27.5 25.75 26.75 25.5 27.75 26.75 26.25 27 27.25 27.25 27 Head Circumference, y 17.6 16.9 17.1 17.1 17.4 17.4 17.2 17.4 17.3 17.3 17.3 (a) Compute the coefficient of determination, R. R2 = % (Round to one decimal place as needed.) (b) Interpret the coefficient of determination. Approximately % of the variation in (Round to one decimal place as neede is explained by the least-squares regression model. head circumference height