Suppose that the index model for stocks A and B is estimated from excess returns with the following results: RA=3.8%+1.25RM+eARB=1.8%+1.6RM+eBM=18%;R-squareeA=0.24;R-squareeB=0.18 What is the standard deviation of each stock? (Do not round intermediate calculations. Round your answers to 2 decima Suppose that the index model for stocks A and B is estimated from excess returns with the following results: RA=3.8%+1.25RM+eARB=1.8%+1.6RM+eBM=18%;R-squareeA=0.24;R-squareeB=0.18 What is the standard deviation of each stock? (Do not round intermediate calculations. Round your answers to 2 decima