A Medical Researcher Finds That the More Overweight a Person

Multiple Choice

A medical researcher finds that the more overweight a person is, the higher his pulse rate tends to
Be) In fact, the model suggests that 12-pound differences in weight are associated with differences
In pulse rate of 4 beats per minute. Which is true?
I. The correlation between pulse rate and weight is 0.33
II. If you lose 6 pounds, your pulse rate will slow down 2 beats per minute.
III. A positive residual means a person's pulse rate is higher than the model predicts.

A) II only
B) none
C) II and III only
D) I only
E) III only