To find the predicted value \( \hat{y} \) using the line of best fit given by the equation \( \hat{y} = 5.5x + 16 \), we can substitute the value of \( x \) (which, in this case, is the age).
From your table, at age 8 ( \( x = 8 \) ):
\[ \hat{y} = 5.5(8) + 16 \] \[ \hat{y} = 44 + 16 \] \[ \hat{y} = 60 \]
So, the value for \( \hat{y} \) is 60.
Response: 60