Amin plans to form an investment portfolio that comprised of 40% investment in share X, 35% investment in share Y and the remaining 25% in share Z. 6% Economic Rate of Return (r) for Shares Situation Probability (P) Y z Strong 0.48 10% 15% 20% Weak 0.52 10% 1% Calculate: (a) Expected return for each share. (b) Expected return for investment portfolio of share X, Y and Z. (c) Standard deviation for the investment portfolio