Q18. Use the following scenario analysis for Stocks X and Y to answer problems. Bear Market Normal Market 0.2 Probability Stock X Bull Market 0.3 50% 10% 0.5 18% 20% -20% -15% Stock Y a) What are the standard deviations of returns on Stocks X and Y? b) Assume that of your $10,000 portfolio, you invest $9,000 in Stock X and $1,000 in Stock Y. What is the expected return on your portfolio