(d) Graph the least-squares line. Be sure to plot the point (x bar, y bar) as a point on the line. (e). Find the value of the coefficient of determination r2. 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 r2 to three decimal places. Round your answers for the percentages to one decimal place.)r2 = explained = %unexplained = %(f). The calves you want to buy are 14 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

9. [-16.25 Points] DETAILS BBBASICSTATSACC 4.2.0085. MY NOTES ASK YOUR TEACHER You are the foreman of the Bar-S cattle ranch In Colorado. A neighboring ranch has calves for sale, and you are going to buy some calves to add to the Bar-S herd. How much should a healthy calf weigh? Let x be the age of the calf (in weeks), and let y be the weight of the calf (in kilograms). I! 1 5 11 16 26 36 II 39 47 73 100 150 200 m2 = ):y1 = Complete parts (a) through (e), given 2x = 95, 2y = 609, 2375, 81,559, 2x y = 13,777, and r a: 0.997. (a) Make a scatter diagram of the data. (Select the correct graph.) Cubic: A Y 0:) Verify the given sums Ex. By, M, Zyz, 2x y, and the value of the sample correlation coefficient r, (For each answer, enter a number. Round your value for rto three decimal places.) 2.4:] (c) Find 2 and ;. Then nd the equation of the leastsquares line? = a + b x. (For each answer, enter a number. Round your answers for 3? and y to two decimal places. Round your answers for a and b to three decimal places.) '4' VI >