The following data are from 10 health-planning districts in Vermont. Y is the percentage of live births grams. is the fertility rate for women or years of age (

is known as the “high-risk fertility rate.”). is the percentage of births to unmarried women. Compute the regression equation for predicting the percentage of births of infants weighing under 2,500 grams (Y) on the basis of the high-risk fertility rate.

District Y X1 X2 1 6.1 43.0 9.2 2 7.1 55.3 12.0 3 7.4 48.5 10.4 4 6.3 38.8 9.8 5 6.5 46.2 9.8 6 5.7 39.9 7.7 7 6.6 43.1 10.9 8 8.1 48.5 9.5 9 6.3 40.0 11.6 10 6.9 56.7 11.6