Given the following distribution for a stock's returns, calculate its expected return. Demand for the Company's Products | Probability of This Demand Occurring Rate of Return If This Demand Occurs Weak 5% -77.00% Below average 25% -6.00% Average 40% 9.00% Above average 20% 17.00% Strong 10% 29.00% O 4.10% 6.80% O 4.55% 7.85% 5.00%Suppose you had held a portfolio consisting of 81.0% of Stock A and 19.0% of Stock B. The historic returns of these stocks for your investment period are given in the table below. Calculate the standard deviation of returns for the portfolio. Year return (A) return (B) 2009 30.00% -16.00% 2010 1.00% 0.00% 2011 3.00% -8.00% 2012 -8.00% -16.00% 2013 -4.00% -9.00% 2014 4.00% 13.00% 2015 -21.00% -6.00% 14.65% 16.01% 12.33% 12.44% 7.93%