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Mother's Age and Baby's Birth Weights: A Residual

APSTAT-DEYI7V

Researchers conducting a study to investigate the relationship between a mother's age in years ($x$) and her baby's birth weight in pounds ($y$) found that the relationship could be modeled by the following LSRL:

$$\hat { y } =3.23+0.15x$$

Based on this equation, what would be the residual for a $28$ year old mother who gave birth to a baby weighing $8.0$ pounds?

A

$-1.14$

B

$-0.57$

C

$0.57$

D

$1.14$

E

$165.13$