Consider the following table: Stock Fund Rate of Return 28% Bond Fund Rate of Return -1096 1296 296 Scenari Severe recession Mild recession Normal growth 0.20 0.25 0.35 0.20 -8.09% 496 42% Boom a. Calculate the values of mean return and variance for the stock fund. (Do not round intermediate calculations. Round "Mean return" value to 1 decimal place and "Variance" to 4 decimal places.) Mean return Variance b. Calculate the value of the covariance between the stock and bond funds. (Negative value should be indicated by a minus sign. Do not round intermediate calculations. Round your answer to 4 decimal places.) Covariance %-Squared