phoenix company common stock is currently selling for $20 per share. security analysts at smith blarney have assigned the following probability distribution to the rate on phoenix stock one year from now:

Rate of Return Probability -20% 0.25 0% 0.30 +20% 0.25 +40% 0.20 Assuming that Phoenix is not expected to pay any dividends during the coming year. a) Determine the expected rate of return on Phoenix Stock. b) Determine the standard deviation of possible rates of return on Phoenix stock