4- Stock A has the following returns for various states of the economy: State of the Economy Probability Stock A's Return Recession 5% -50% Below Average 25% -3% Average 35% 10% Above Average 20% 20% Boom 15% 45% Stock A's expected return is 2- What is a beta? How is it used to calculate r, the investor's required rate of return? 3-Does greater risk imply a bad investment