Use the data on the two companies that you downloaded for HW2 (GE. INTC. MCD. XOM). a) Compute the standard deviation of average holding period returns in EXCEL. Present both Average Returns and Standard Deviation (total of four numbers, two for each finn). Compute the covariance and correlation of returns for both companies. Briefly comment on your findings. Plot the feasible set of expected return - standard deviation combinations achievable from investing in the two companies