f Messenger | Facebook X D2L Exam 1 Practice Test S X D2L Exam 1 Practice Test S X A HW 4 - Math 270.02 - X Losing 15k networth t X D2L Chapter Four Lecture X *Course Hero X X webassign.net/web/Student/Assignment-Responses/last?dep=28421681 G ABP 14. [-/9 Points] DETAILS BBBASICSTAT8 4.R.009.S. MY NOTES PRACTICE ANOTHER Bighorn sheep are beautiful wild animals found throughout the western United States. Let x be the age of a bighorn sheep (in years), and let y be the mortality rate (percent that die) for this age group. For example, x = 1, y = 14 means that 14% of the bighorn sheep between 1 and 2 years old died. A random sample of Arizona bighorn sheep gave the following information: 4 5 y 12.2 17.5 14.4 19.6 20.0 LA USE SALT Ex = 15; Zy = 83.7; Ex2 = 55; Zy2 = 1,446.61; Exy = 268.8 (a) Find x, y, b, and the equation of the least-squares line. (Round your answers for x and y to two decimal places. Round your least-squares estimates to three decimal places.) X = V = b = V = (b) Draw a scatter diagram for the data. Plot the least-squares line on your scatter diagram. y 22- 22 20 20 18 18 16 16 14 14 12 12 Type here to search O Pr Ps N EN 7:19 PM 810F ~ (1)12/15/2022f Messenger | Facebook X D2L Exam 1 Practice Test S X D2L Exam 1 Practice Test S X A HW 4 - Math 270.02 - X Losing 15k networth t X D2L Chapter Four Lecture X *Course Hero X - C X webassign.net/web/Student/Assignment-Responses/last?dep=28421681 b= G ABP ES V = (b) Draw a scatter diagram for the data. Plot the least-squares line on your scatter diagram. y 22 22 20 20 18 18 16 16 14 14 12 12 10 X 1 10 0 0 2 3 4 5 6 O 0 1 X 2 3 4 5 6 22 22 20 20 18 18 16 16 Type here to search O Pr PS G N EN 7:19 PM 810F ~ (1)12/15/2022f Messenger | Facebook X D2L Exam 1 Practice Test S X D2L Exam 1 Practice Test S X A HW 4 - Math 270.02 - X Losing 15k networth t X D2L Chapter Four Lecture X *Course Hero X X -> C webassign.net/web/Student/Assignment-Responses/last?dep=28421681 G ABP ES 14 14 12 12 10 JX 10 1 2 3 4 5 6 O 0 1 2 X 3 4 5 6 22 22 20 20 18 18 16 16 14 14 12 12 10 X 10 OO 1 2 3 4 5 0 2 X 3 4 5 (c) Find the sample correlation coefficient r and the coefficient of determination . (Round your answers to three decimal places.) r = 12 = What percentage of variation in y is explained by the least-squares model? (Round your answer to one decimal place.) % Need Help? Read It Type here to search O Pr Ps La N EN 7:19 PM 810F ~ (1)(2/15/2022