Sharpe ratio = (Return - Risk-free rate)/ Quantitative Problem: You are given the following probability distribution for CHC Enterprises: State of Economy Probability Rate of return Strong 0.25 18% Normal 0.50 9% Weak 0.25 What is the stock's expected return? Do not round intermediate calculations. Round your answer to two decimal places. -4% % 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