MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Question

Let x be the age in years of a licensed automobile driver. Let y be the percentage of all fatal accidents (for a given age) due to speeding. For example, the first data pair indicates that 37% of all fatal accidents of 17-year-olds are due to speeding.

x 17 27 37 47 57 67 77
y 37 28 19 12 10 7 5

Complete parts (a) through (e), given

Σx = 329, Σy = 118, Σx2 = 18,263, Σy2 = 2832, Σxy = 4076, and r ≈ −0.957. (b) Verify the given sums Σx, Σy, Σx2, Σy2, Σxy and the value of the sample correlation coefficient r. (Round your value for r to three decimal places.). Σx=
Σy= 
Σx2= 
Σy2= 
Σxy= 
r= 

 

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