Based on the data shown below, calculate the regression line (each value to one or two decimal places) y = X + X y 3 19.55 4 21 5 21.35 6 26.5 7 27.95 8 29.5 9 30.55 10 31.9 11 32.45 12 36.2 13 14 15 345 35.85 36.9 40.85 16 43.2 Enter an integer or decimal number [more..