Consider the following model: y: = Bo + B,X1t +...+ BxXkt + ut, which is known as the Classical Linear Regression Model (CLRM). a) List and discuss the assumptions you need to derive the OLS estimator. [14 marks] b) Can the following models be estimated using OLS under the assumptions in (a)? Explain your answer. i) y: = Bo + B1x: + r; ii) yg = Bo + Bi x10 + z. [6 marks] La nource Manager CateHero.com c) How do you test for the significance of the coefficient of the regressor x in model (1)? Write down the null and alternative hypotheses, the test statistic and explain the decision rule to reject the null hypothesis. [10 marks]