17. [-/5.26 Points] DETAILS BBBASICSTATSACC 4.2.008.5. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER 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 the calf (in kilograms). add to the Bar-5 herd. How much should a healthy calf weigh? Let a be the age of the calf (in weeks), and let y be the weight of Complete parts (a) through (e), given Ex = 95, Ty = 609, Ex? = 2375, By? = 81,539, Exy = 13,777, and r * 0.997. a) Make a scatter diagram of the data. (Select the correct graph.) 200 150 8 85 100 sol 10 O 8 8 O 10 (b) Verify the given sums Ix, Ty, Ex?, Zy?, Dx y, and the value of the se decimal places.) Ex= Ey= (c) Find i. and y. Then find the equation of the and b to three decimal places.) (d) Graph the least-squares line. Be sure to plot the point (x, v) as a point on the line. (Select the correct graph.) 10 O 10 20 30 () Find the value of the coefficient of determination ?. What percentage of the variation to three decimal places. Round your answers for the percentages to one decimal place.) explained = unexplained = if) The calves you want to buy are 23 weeks old. What does the kg Need Help? Road Submit