Exhibit 13-6
Below You Are Given a Partial Computer Output

Exhibit 13-6
Below you are given a partial computer output based on a sample of 16 observations.
$\begin{array}{lcc} & \text { Coefficient } & \text { Standard Error } \\\text { Intercept } & 12.924&4.425\\\mathrm{X}_{1} & -3.682&2.63. \\\mathrm{X}_{2} &45.216&12.560\\\end{array}$
$\text { Analysis of Variance }$

$\begin{array}{lccc}\text { Source of } & \text { Degrees } &\text { Sum of } &\text { Mean }\\\text { Variation } & \text { of Freedom }&\text { Squares } & \text { Square }&F\\\text { Regression }&&4,853&2,426.5\\\text {Error }&&&485.3\end{array}$
-Refer to Exhibit 13-6. The interpretation of the coefficient of X1 is that

A) a one unit change in X1 will lead to a 3.682 unit decrease in Y
B) a one unit increase in X1 will lead to a 3.682 unit decrease in Y when all other variables are held constant
C) a one unit increase in X1 will lead to a 3.682 unit decrease in X2 when all other variables are held constant
D) It is impossible to interpret the coefficient.