How do I work this problem?

General Meters is considering two mergers. The first is with Firm A in its own volatile industry, the auto speedometer industry, while the second is a merger with Firm B in an industry that moves in the opposite direction (and will tend to level out performance due to negative correlation). General Meters Merger with Firm A Possible Earnings ($ in millions) Probability $ 30 0.10 40 0.40 50 0.50 General Meters Merger with Firm B Possible Earnings ($ in millions) Probability $ 30 0.05 40 0.50 50 0.45 a. Compute the mean, standard deviation, and coefficient of variation for both investments. (Do not round intermediate calculations. Enter your answers in millions. Round "Coefficient of variation" to 3 decimal places and "Standard deviation" to 2 decimal places.) Merger A Merger B Mean Standard deviation Coefficient of variation b. Assuming investors are risk-averse, which alternative can be expected to bring the higher valuation? Merger A Merger B