Medical researchers have noted that adolescent females are muchmore likely to deliver low-birth-weight babies than are adultfemales. Because low-birth-weight babies have a higher mortalityrate, a number of studies have examined the relationship betweenbirth weight and mother's age. One such study is described in thearticle "Body Size and Intelligence in 6-Year-Olds: Are Offspringof Teenage Mothers at Risk?"†The following data on maternal age(in years) and birth weight of baby (in grams) are consistent withsummary values given in the article and also with data published bythe National Center for Health Statistics.
| Mother's age | 15 | 17 | 18 | 15 | 16 | 19 | 17 | 16 | 18 | 19 |
|---|
| Birth weight | 2,319 | 3,393 | 3,301 | 2,648 | 2,867 | 3,297 | 2,970 | 2,535 | 3,138 | 3,573 |
|---|
(c)
Find the equation of the least-squares regression line.
? = ________ + (________) x
(g)
Use the regression line to predict for birth weight, in grams,of a baby born to a 15-year-old mother?
_________ g
