From the data in Exercise 9.1, compute the regression equation for predicting the percentage of births of infants under 2500 grams (Y) on the basis of fertility rate for females younger than 18 or...

From the data in Exercise 9.1, compute the regression equation for predicting the percentage of births of infants under 2500 grams (Y) on the basis of fertility rate for females younger than 18 or older than 34 years of age ( ). ( is known as the “high-risk fertility rate.”)