Problem 8-12 Suppose that the index model for stocks A and B is estimated from excess returns with the following results: RA = 3.2% + 1.10RM + eA RB = -1.4% + 1.25RM + eB OM = 30%; R-squarea = 0.28; R-squares = 0.12 What is the covariance between each stock and the market index? (Calculate using numbers in decimal form, not percentages. Do not round your intermediate calculations. Round your answers to 3 decimal places.) Covariance Stock A Stock B