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The Data Below Are the Number of Absences and the Final

Question 68

Multiple Choice

The data below are the number of absences and the final grades of 9 randomly selected students from aliterature class. Find the equation of the regression line for the given data. What would be the predicted finalgrade if a student was absent 14 times? Round the regression line values to the nearest hundredth. Round thepredicted grade to the nearest whole number.  Number of absences, x0364921585 Final grade, y988680827192557682\begin{array}{l|c|c|c|c|c|c|c|c|c|}\text { Number of absences, } \mathrm{x} & 0 & 3 & 6 & 4 & 9 & 2 & 15 & 8 & 5 \\\hline \text { Final grade, } \mathrm{y} & 98 & 86 & 80 & 82 & 71 & 92 & 55 & 76 & 82\end{array}


A) y^=2.75x+96.14;58\hat { y } = - 2.75 x + 96.14 ; 58
B) y^=96.14x2.75;1343\hat { y } = 96.14 x - 2.75 ; 1343
C) y^=2.75x96.14;134.64\hat{ y } = - 2.75 \mathrm { x } - 96.14 ; 134.64
D) y^=96.14x+2.75;1343\hat { y } = - 96.14 \mathrm { x } + 2.75 ; 1343

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