Use the following data set to answer the Questions: $\begin{array} { | l | l | l | l | l | l | l | l | l }
\hline \begin{array} { l }
\text { Length of } \
\text { commute in } \
\text { miles } ( x )
\end{array} & 2 & 10 & 8 & 30 & 12 & 70 & 15 & 20 \
\hline \begin{array} { l }
\text { Time of } \
\text { commute in } \
\text { minutes (y) }
\end{array} & 5 & 25 & 20 & 45 & 25 & 80 & 30 & 35 \
\hline
\end{array}$
-According to the regression equation, each additional mile adds, on average, about how many minutes to the commute?
A) 0.5
B) 1
C) 1.5
D) 2

Question

Use the following data set to answer the  Questions:  $\begin{array} { | l | l | l | l | l | l | l | l | l } 
\hline \begin{array} { l } 
\text { Length of } \
\text { commute in } \
\text { miles } ( x )
\end{array} & 2 & 10 & 8 & 30 & 12 & 70 & 15 & 20 \
\hline \begin{array} { l } 
\text { Time of } \
\text { commute in } \
\text { minutes (y) }
\end{array} & 5 & 25 & 20 & 45 & 25 & 80 & 30 & 35 \
\hline
\end{array}$
-According to the regression equation, each additional mile adds, on average, about how many minutes to the commute?
A) 0.5
B) 1
C) 1.5
D) 2

Quizplus · Accepted Answer

The regression equation is given by
$$\hat{y} = 1.5 x + 2.5$$
where $x$ is the length of commute in miles and $\hat{y}$ is the predicted time of commute in minutes. This equation tells us that for each additional mile, the predicted time of commute increases by 1.5 minutes. Therefore, the answer is B) 1.

Use the Following Data Set to Answer the Questions