A multiple regression model has the form $\hat { Y } = 10 - 4 x _ { 1 } + 3 x _ { 2 }$ , where the dependent variable Y represents (in $1,000), $x _ { 1 }$ represents unit price (in dollars), and $x _ { 2 }$ represents advertisement (in dollars). As $x _ { 1 }$ increases by $1, while holding $x _ { 2 }$ fixed, then sales are expected to
A) increase by $7
B) increase by $13
C) decrease by $4
D) decrease by $4,000
E) remain the same

Question

Quizplus · Accepted Answer

The Answer of A multiple regression model has the form $\hat { Y } = 10 - 4 x _ { 1 } + 3 x _ { 2 }$ , where the dependent variable Y represents (in $1,000), $x _ { 1 }$ represents unit price (in dollars), and $x _ { 2 }$ represents advertisement (in dollars). As $x _ { 1 }$ increases by $1, while holding $x _ { 2 }$ fixed, then sales are expected to
A) increase by $7
B) increase by $13
C) decrease by $4
D) decrease by $4,000
E) remain the same

A Multiple Regression Model Has the Form Y^=10−4x1+3x2\hat { Y } = 10 - 4 x _ { 1 } + 3 x _ { 2 }Y^=10−4x1​+3x2​

A Multiple Regression Model Has the Form $\hat { Y } = 10 - 4 x _ { 1 } + 3 x _ { 2 }$