QNo. 3 Return and probabilities of different states of economic conditions for Margallah Concrete Company are given in the table below. Calculate with this help of this data the following expected values for this company, i) Expected Return ii) Standard Deviation of returns (10 Marks) Rate of Return if State Occurs Probability of State of Economy .20 Stock A State of Economy Recession Normal Boom Stock B .50 -.15 20 .60 .20 .30 .40 .30