hi pls help

Q4. Use the following information and answer the following questions. Bear Market Normal Market Probability 0.30 0.50 Stock A -10% 15% Stock B -7% 6% Stock C -5% 8% Bull market 0..20 20% 12% 16% 1) What are the expected returns? 2) What are the standard deviations? 3) Assume that you have invested RM 25,000 in Stock A, RM 15,000 in stock B and RM 20,000 in Stock C what is the expected return on your portfolio? 4) If the correlation between A,B is 40%, B,C is 60% and C,A is 80% what is the portfolio Standard Deviation