50 pairs of data points were collected on variables X(baby weight) and Y(wrist circumference) After loading the data in r, we calculated

50=1 =660, 50 =1 2=22800,50=1=1400,50=12=99000,50=1=47500

a.) find the least squares estimates of the regression line, and write the estimated regression equation

Y(hat) i=(hat)1+(hat)1Xi

a(hat)1=

(hat)1=

b.) find the estimate of error variance (MSE)

MSE =