Consider the following assets whose returns depend on whether the highly credible health and safety "experts" will coerce individuals into being injected with either three or four booster shots. Return Pfizer Moderna State 3 booster shots 4 booster shots Probability 20% 8% 6% 80% 14% 16% a. Calculate the expected returns for Pfizer and Moderna. (4 points) b. Calculate the standard deviations for Pfizer and Moderna. (4 points) C Calculate the expected return and standard deviation of a portfolio with 25% invested in Pfizer and 75% invested in Moderna. (10 points)