Consider the following table: Scenario Severe recession Mild recession Normal growth Probability 0.10 Stock Fund Rate of Return -28% Bond Fund Rate of Return -10% 0.20 0.35 0.35 -8.0% 4% 42% 12% 2 7% Boom Required: 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 % %-Squared 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