Let x be the age of a licensed driver in years. Let y be the percentage of all fatal accidents (for a given age) due to failure to yield the right of way. For example, the first data pair states that 5% of all fatal accidents of 37-year-olds are due to failure to yield the right of way. х 37 47 57 67 77 28 87 44 5 8 10 14

MATLAB: An Introduction with Applications
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Chapter1: Starting With Matlab
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(b) Verify the given sums Ex, Ey, Ex², Ey², Exy, and the value of the sample correlation coefficient r. (Round your value for r to four decimal places.)
Σχ =
Ey :
Ex?
Ey? :
Exy :
r =
(c) Find x, and y. Then find the equation of the least-squares line ŷ = a + bx. (Round your answer to four decimal places.)
X =
y =
ŷ =
+
(d) Graph the least-squares line. Be sure to plot the point (x, y) as a point on the line.
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Transcribed Image Text:10 Point 7 Point 8 30 35 40 45 50 55 60 65 70 75 80 85 90 Help WebAssign. Graphing Tool + Submission Data (b) Verify the given sums Ex, Ey, Ex², Ey², Exy, and the value of the sample correlation coefficient r. (Round your value for r to four decimal places.) Σχ = Ey : Ex? Ey? : Exy : r = (c) Find x, and y. Then find the equation of the least-squares line ŷ = a + bx. (Round your answer to four decimal places.) X = y = ŷ = + (d) Graph the least-squares line. Be sure to plot the point (x, y) as a point on the line. y y 100 100 80 80 60 60 40 40 20 20 X 20 40 60 80 20 40 60 80 - 20 - 20 y y 100- 100
Let x be the age of a licensed driver in years. Let y be the percentage of all fatal accidents (for a given age) due to failure to yield the right of way. For example, the first data pair states that 5% of all
fatal accidents of 37-year-olds are due to failure to yield the right of way.
X
37
47
57
67
77
87
y
8.
10
14
28
44
n USE SALT
Complete parts (a) through (e), given Ex = 372, Ey :
109, Σχ 24814, Σγ, 3105, Σχy
8053, and r z 0.9230.
(a) Draw a scatter diagram displaying the data.
50
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Clear All
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Fill
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Point 5
20
No
Solution
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WebAssign. Graphing Tool
Submission Data
(b) Verify the given sums Ex, Ey, Ex², Ey², Exy, and the value of the sample correlation coefficient r. (Round your value for r to four decimal places.)
Σχ -
Ey =
Ex?
Transcribed Image Text:Let x be the age of a licensed driver in years. Let y be the percentage of all fatal accidents (for a given age) due to failure to yield the right of way. For example, the first data pair states that 5% of all fatal accidents of 37-year-olds are due to failure to yield the right of way. X 37 47 57 67 77 87 y 8. 10 14 28 44 n USE SALT Complete parts (a) through (e), given Ex = 372, Ey : 109, Σχ 24814, Σγ, 3105, Σχy 8053, and r z 0.9230. (a) Draw a scatter diagram displaying the data. 50 Graph Layers Clear All 45 Point 1 Delete 40 Point 2 Fill 35 Point 3 30 Point 4 25 Point 5 20 No Solution 15 Point 6 10 Point 7 Point 8 30 35 40 45 50 55 60 65 70 75 80 85 90 Help WebAssign. Graphing Tool Submission Data (b) Verify the given sums Ex, Ey, Ex², Ey², Exy, and the value of the sample correlation coefficient r. (Round your value for r to four decimal places.) Σχ - Ey = Ex?
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