, _ . . You have a data set of 100 observations. You want to choose the best modEl'for this data. You estimate two modEls. What equation best represents the regressmn line drawn in the gure below? Model 1: . y=i30+51$1+2$2+i93$3+4w4+6 n. Model 2: w y=5o+1$1+i92172+e 5? "' 5' ' '5 You also know that for Model 1, SSR is 355 and R2 is 0.73. For Model 2, SSR is equal to 285. What is the value of the test statistic for partial F test? Select one: Select one: 0 a. y_hat = 2 + 0.21 7 0.3302 + 0.02103 0 a. 0.8655 : _ A - A O b. y_hat 2+O.2x 0.3x 2 (1.sz 3 O b. 25-3237 -. _ A _ A O c. y_hat 2 +0.2): 0.3x 2 0.02x 3 O c. 1.027? 0 d. yihat =- 2 + 0.21: - 0.3an + 0.02an o d_ 17.5683 0 e. 30.9832 When testing the overall validity of a linear regression model, which of the following is associated with a larger F-statistic? Select one: 0 a. Larger total variations. 0 b. Larger unexplained variations. 0 c. A larger critical value of overall validity test. 0 d. Smaller explained variations. 0 e. None of the options