Stock A has the following returns for various states of the economy: A's State of thel Economy Probability Recession 10% Below Average 20% Average 40% Above Average 20% Boom 10% Stock Return -30% 2% 10% 18% 40% Stock A's expected return, standard deviation and covariance is: Expected return % (2 decimals) Standard Deviation = (2 decimals) Covariance (2 decimals)