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  1. J

    Nullity test

    Good evening, I have a problem i can't solve. The data is: n=25 Y_i= Beta1 + Beta2 * x_i + Beta3 * z_i + epsilon_i B_hat = (2.341 1.616 0.014) SSR= 233.726 SST= 5843.15 sqrt(X*Xt)^(-1)_(3,3)= 0.00107 (square root of the bottom right coefficient of the (X*Xt)^(-1) matrix). The questions i'm on...