Please Explain!

A stock's returns have the following distribution: 0.1 Demand for the Probability of this Rate of Return If Company's Products Demand Occurring This Demand Occurs Weak (24%) Below average 0.2 (14) Average 0.3 14 Above average 0.3 25 Strong 0.1 54 1.0 Assume the risk-free rate is 4%. 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 plades. Stock's expected return: Standard deviation: % Coefficient of variation: Sharpe ratio: eBook An individual has $20,000 invested in a stock with a beta of 0.4 and another $65,000 invested in a stock with a beta of 1.2. If these are the only two investments In her portfolio, what is her portfolio's beta? Do not round Intermediate calculations. Round your answer to two decimal places. B eBook Problem Walk-Through Suppose you are the money manager of a $4.62 million investment fund. The fund consists of four stocks with the following investments and betas: Stock Investment Beta A $ 260,000 1.50 B 700,000 (0.50) 960,000 1.25 D 2,700,000 0.75 If the market's required rate of return is 12% and the risk-free rate is 6%, what is the fund's required rate of return? Do not round intermediate calculations. Round your answer to two decimal places %