13/16 points BBUnderStat11 9.2.008 My Notes Ask Your Teac You are the foreman of

Question

13/16 points BBUnderStat11 9.2.008 My Notes Ask Your Teac 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) 3 2 10 16 26 36 y 46 53 78 100 150 200 complete parts (a) through (e), given ?? = 93, Ey = 627, ??2 = 2341, Ey2 53,509, Ery = 13,724, and r ; 0.996 (a) Draw a scatter diagram displaying the data. Tools Object Properties WbAssign graphing tool D Submission Data (b) verify the given sums E, y. E. y, Exy, and the value of the sample correlation coefficient r., (Round your value for r to three decimal places.) Ty a y2 83509 xy13724 O Type here to search

Explanation / Answer

e)
r2 = 0.992

explained = 0.992*100 = 99.2%
unexplained = (1 - 0.992)*100 = 0.8%

f)
regression equation, ycap = 35.478 + 4.453x

for x = 15
ycap = 35.478 + 4.453*15 = 102.27

Ans: 102.27 kg

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