In Chapter 6, Problem 21 (p. 152), data were given on the relationship between the number of soft drinks consumed in a week by eight 12-year-olds and their body mass index (BMI). The 12-year-olds were...

In Chapter 6, Problem 21 (p. 152), data were given on the relationship between the number of soft drinks consumed in a week by eight 12-year-olds and their body mass index (BMI). The 12-year-olds were randomly selected from a junior high school in a large northwestern city. The data are again presented here.

a. Assuming the data show a linear relationship, derive the least-squares regression line for predicting

BMI, given the number of soft drinks consumed.

b. Using this regression line, what BMI would you predict for a 12-year-old from this school who consumes a weekly average of 17 soft drinks?