Consider the simple linear regression model: Yi=1+2Xi+Uifori=1,,n. a. Showing all working, derive the expression for ^1 and ^2. (10 marks) b. Show that the OLS estimator ^2 is an unbiased estimator of 2. Please show all working and states the assumptions made. (10 marks) c. State five assumptions of the classical linear regression model (CLRM). (5 marks) Consider the simple linear regression model: Yi=1+2Xi+Uifori=1,,n. a. Showing all working, derive the expression for ^1 and ^2. (10 marks) b. Show that the OLS estimator ^2 is an unbiased estimator of 2. Please show all working and states the assumptions made. (10 marks) c. State five assumptions of the classical linear regression model (CLRM)