A stock's returns have the following distribution Demand for the Company's Products Demand Occurring Weak Below average Average Above average Strong Rate of Return If This Demand Occurs 3890 Probability of This 0.2 0.1 0.3 0.1 0.3 1.0 13 20 75 a. Calculate the stock's expected return. Round your answer to two decimal places b. Calculate the stock's standard deviation. Do not round intermediate calculations. Round your answer to two decimal places c. Calculate the stock's coefficient of variation. Round your answer to two decimal places