Quantitative Problem: You are given the following probability distribution for CHC Enterprises: State of Probability Rate of Economy return Strong 0.25 18% Normal 0.55 8% Weak 0.20 -4% What is the stock's expected return? Do not round Intermediate calculations. Round your answer to two decimal places, 8.1 % What is the stock's standard deviation? Do not round Intermediate calculations. Round your answer to two decimal places. % What is the stock's coefficient of variation? Do not round Intermediate calculations. Round your answer to two decimal places