An Analyst at Standard Bank wants to invest in two stocks, Cresta and Sefalana and has been provided the following information on the stocks. Use the information to answer the questions that follow: State of Economy Probability of State of Economy Rate of Return on Cresta Rate of Return on Sefalana Recession 0.10 5% -10% Normal 0.60 9% 12% Boom 0.30 10% 20% a) Calculate the expected return on stock of Cresta and Sefalana? (6 marks) b) Calculate the variance and standard deviation for stock of Cresta and Sefalana? (8 marks) c) What is the expected return of an equally weighted portfolio of these two stocks? (4 marks) d) Briefly, differentiate between systematic risk and firm specific risk. (2 marks)