Compute the coefficients b1 and b2 for the regression model
y`i = b0 + b1x1i + b2x2i
given the following summary statistics.
a. rx1y = 0.60, rx2y = 0.70, rx1x2 = 0.50,
sx1 = 200, sx2 = 100, sy = 400
b. rx1y = -0.60, rx2y = 0.70, rx1x2 = -0.50,
sx1 = 200, sx2 = 100, sy = 400
c. rx1y = 0.40, rx2y = 0.450, rx1x2 = 0.80,
sx1 = 200, sx2 = 100, sy = 400
d. rx1y = 0.60, rx2y = -0.50, rx1x2 = -0.60,
sx1 = 200, sx2 = 100, sy = 400