Consider the following table: Stock Fund Rate of ReturnRate of Return -38% -26% 896 46% Bond Fund nario Severe recession Mild recession Normal growth Boom Probability 0.20 0.20 0.35 0.25 -12% 7% 3% a. Calculate the values of mean return and variance for the stock fund. Mean return? Variance funds (Negative value should be indicated by a minus ign. Do not round intermediate calculations. Round your answer to 2 decimal places.) Covariance