Below are the results from the cox regression model using the same data above. Use the information below to answer the questions, 4b) - 4f). In ({(A)) = 113.756 and In ({(B)) = 98.834, where A: Model without covariates and B: Model with all covariates Parameter BTreatment Boender Bage Estimate -0.8895 -2.2425 0.0008 SE(Estimate) 0.3621 0.4602 0.0225 4b) Show how you can compute the likelihood ratio test to test the null hypothesis of Ho: Brreatment = Bgender = Bage = 0. Comment on the results. (4 points) 4c) Show how you can compute the Wald test to test Ho: BTreatment = 0. Comment on the results. (4 points) Below are the results from the cox regression model using the same data above. Use the information below to answer the questions, 4b) - 4f). In ({(A)) = 113.756 and In ({(B)) = 98.834, where A: Model without covariates and B: Model with all covariates Parameter BTreatment Boender Bage Estimate -0.8895 -2.2425 0.0008 SE(Estimate) 0.3621 0.4602 0.0225 4b) Show how you can compute the likelihood ratio test to test the null hypothesis of Ho: Brreatment = Bgender = Bage = 0. Comment on the results. (4 points) 4c) Show how you can compute the Wald test to test Ho: BTreatment = 0. Comment on the results. (4 points)