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 33% of all fatal accidents of 17-year-olds are due to speeding.
x | 17 | 27 | 37 | 47 | 57 | 67 | 77 |
y | 33 | 28 | 22 | 12 | 10 | 7 | 5 |
Complete parts (a) through (e), given
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Σx | = | |
Σy | = | |
Σx^{2} | = | |
Σy^{2} | = | |
Σxy | = | |
r | = |
x | = | |
y | = | |
= | + x |
r^{2} = | |
explained | % |
unexplained | % |
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