題組內容

1. Consider the multiple regression equation \( \hat{y} = 2 + 7x_{1} + 5x_{2} \) and ,\[ \sum_{i=1}^{5} (y_i - \bar{y})^2 = 360, \quad \sum_{i=1}^{5} (\hat{y}_i - \bar{y})^2 = 350. \](\[ F_{1,5,0.05} = 230.2; \quad F_{5,1,0.05} = 6.61; \quad F_{2,5,0.05} = 19.3; \quad F_{5,2,0.05} = 5.79; \quad F_{2,2,0.05} = 19.0 \](

(2) Find the unbiased estimator for. (5%)