cant figure this out

eBook Problem Walk-Through A stock's returns have the following distribution: Demand for the Probability of this Rate of Return if Company's Products Demand Occurring this Demand Occurs Weak 0.1 (40%) Below average 0.2 (14) Average 0.3 17 Above average 0.3 35 Strong 0.1 59 1.0 Assume the risk free rate is 2%. Calculate the stock's expected return, standard deviation, coefficient of variation, and Sharpe ratio. Do not round intermediate calculations. Round your answers to two decimal places Stock's expected return 9 Standard deviation: Coefficient of variation Sharpe ratio