Question

How can I find the P-value? Please write down all of the step

. reg testscr str, robust 420 Regression with robust standard errors Number of obs FC 1, 418 Prob F R-squar ed Root MSE 19.2 -0. 0000 -.0512 -18. 581 Robust Coef. Std. Err. [95% conf. interval] testscr str -cons 194892 698. 933 10.36436 -2.279808 -4.39 0.000 67.440.000 -3. 300 45 1.258671 678. 5602 719. 3057 Test Score = 698.9 _ 2.28 . STR (10.4) (0.52) SE(βο-10.4 and SECA- 0.52. How can we test 0? 2.28 1% 2-sided critical value is 2.58: we reject the null at the 1% Significance leve Alternatively (easier here!), we can use the P-value, which is equal to 105 here

Answer 1

β -2.28-4.38 SE 0.52 Sample size n 420 df-n-2-418 p- value -TDIST(-4.38,418,2)-1.50213E-05-10-5 (using excel ) Since p- value >0.01 Hence we reject te null hypothesis