statistics and probability

7:31 GH MX 7:32 CH M * - 4. 1-72.5 Points] DETAILS BBUNDERSTAT12 9.2.008.5 MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER X 9.2 Hmwk - Linear Reg.. 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 webassign.net 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 he calf (in kilograms). * 1 45 200 LOL USE SALT 150 Complete parts (a) through (e), given Ex - 93, Zy - 608, Ex2 - 2335, Zy2 - 81,390, Exy = 13,614, and r = 0.9967. (a) Draw a scatter diagram displaying the data. y (calf weight (in kilograms)) 100 10 15 20 25 30 35 y (calf weight (in kilograms)) O x (age of call (in weeks)) 200 100 150 200 150 O * (age of calf (in weeks)) y (calf weight (in kilograms)) 100 150 10 15 20 25 30 y (calf weight (in kilograms)) O x (age of calf (in weeks)) 100 10 15 20 25 30 35 O x (age of call (in weeks)) y (calf weight (in kilograms)) 100 y (calf weight (in kilograms )) 150 O x (age of calf (in weeks)) (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? (Round your answer for 2 to four 100 150 200 decimal places. Round your answers for the percentages to two decimal place.) O *(age of calf (in weeks)) explained 200 unexplained (f) The calves you want to buy are 11 weeks old. What does the least-squares line predict for a healthy weight? (Round your answer to two decimal places.) 150 y (calf weight (in kilograms)) Need Help? Read It 100 5. [-/2.5 Points] DETAILS BBUNDERSTAT12 9.2.010.5. 10 15 20 30 35 O x (age of call (in weeks)) MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER It is thought that basketball teams that make too many fouls in a game tend to lose the game even if they otherwise play well. Let x be the number of fouls more than (Le., over and above) the opposing team. Let y be the percentage of times the team with the larger (b) Verify the given sums Ex, Ly, Ex?, Ey', Exy, and the value of the sample correlation coefficient r. (Round your value for s to number of fouls wins the game. our decimal places.) X 1 7 49 43 33 26