Question 4 1 points Save Answer In reference to model (1), if the researcher wants to test the hypothesis that both S, and By are zero at 59% significance level, which of the following critical value should he use (when the model is estimated with a sample of 145 workers]? O a. F.INV.RT (0. 05, 4, 143) = 2.435 O b. F.INV.RT (0. 05, 4, 141) = 2.436 O c. F. INV.RT (0. 05, 2,143) = 3.059 O d. F.INV.RT (0.05,2,141) = 3.060