The following data pertains to Stocks X and Y : Required (a) What are the expected rates of return for Stocks X and Y (\% in 2 d.p.)? (4 marks) (b) What are the standard deviation of returns on Stocks X and Y (\% in 2 d.p.)? (4 marks) (c) Assume that out of your $10,000 portfolio, you invest $9,000 in Stock X and $1,000 in Stock Y.What is the standard deviation on your portfolio (\% in 2 d.p.)? (4 marks) The following data pertains to Stocks X and Y : Required (a) What are the expected rates of return for Stocks X and Y (\% in 2 d.p.)? (4 marks) (b) What are the standard deviation of returns on Stocks X and Y (\% in 2 d.p.)? (4 marks) (c) Assume that out of your $10,000 portfolio, you invest $9,000 in Stock X and $1,000 in Stock Y.What is the standard deviation on your portfolio (\% in 2 d.p.)? (4 marks)