We Decide to Conduct a Multiple Regression Analysis to Predict

Multiple Choice

We decide to conduct a multiple regression analysis to predict the attendance at a major league baseball game. We use the size of the stadium as a quantitative independent variable and the type Of game as a qualitative variable (with two levels - day game or night game) . We hypothesize the
Following model: $$\mathrm { E } ( \mathrm { y } ) = \beta _ { 0 } + \beta _ { 1 ^ { \mathrm { x } } 1 } + \beta _ { 2 \mathrm { x } _ { 2 } } + \beta _ { 3 } \mathrm { x } _ { 3 }$$
Where $\quad$ $x _ { 1 } =$ size of the stadium
$\quad$$\quad$$\quad$$x _ { 2 } = 1$ if a day game, 0 if a night game

A plot of the $y - x _ { 1 }$ relationship would show:

A) Two non-parallel curves
B) Two parallel lines
C) Two parallel curves
D) Two non-parallel lines