Question

12. The least-squares regression equation ý = 10 + 2x describes the relationship between x = age (in

weeks) and y = weight (in pounds) for a sample of 50 German shepherd puppies for ages 5 weeks. The weight of a particular German Shepherd puppy that is 10 weeks old is underestimated by 10
pounds. How much does this particular puppy weigh?
(A) 10 pounds
(B)20 pounds
(C) 30 pounds
(D) 40 pounds
(E) 50 pounds

Answer 1

D

Step-by-step explanation:

A German Shepherd puppy that is 10 weeks old is predicted to weigh 10 + 2(10) = 30 pounds. Because the weight of this particular puppy is underestimated by 10 pounds, this puppy weighs 40 pounds.

Answer 2

D

Step-by-step explanation:

The correct answer is (D). A German Shepherd puppy that is 10 weeks old is predicted to weigh 10 + 2(10) = 30 pounds. Because the weight of this particular puppy is underestimated by 10 pounds, this puppy weighs 40 pounds.