200 200 150 150 100 100 50 50 X X 10 20 O 30 40 10 20 30 40 (e) Find the value of the coefficient of determination 2. What percentage of the variation in y can be explained by the corresponding variation in x and the least-squares line? What percentage is unexplained? (For each answer, enter a number. Round your answer for 2 to three decimal places. Round your answers for the percentages one decimal place.) 12 = explained = % unexplained = % (f) The calves you want to buy are 16 weeks old. What does the least-squares line predict for a healthy weight (in kg)? (Enter a number. Round your answer to two decimal places.) kg