Question

Type numbers in the boxes. Given the following summary statistics, determine the regression equation used to predict y from x. ab Part 1: 10 points aby Part 2: 10 points Sy 1.94 20 points Sc 1.71 r 0.6 21.57 ý 74.51 Round all answers to 2 decimal places. slope = y-intercept = Use the exact value of slope when calculating the y-intercept.

Answer 1

Now,

$Slope=\beta_1=\frac{s_{xy}}{s_{x}^2}=\frac{rs_xs_y}{s_{x}^2}=\frac{rs_{y}}{s_x}=\frac{(0.6)(1.94)}{1.71}=0.6807\approx 0.68$and,

y - intercept = Bo = 7 - Bit = 74.51 - (0.68) (21.57) = 54.842454.84

which are the required values.