4. The expected return on stock W is 10% and its standard deviation is 15%. Expected return on stock V is 16% and its standard deviation is 24%. The correlation between returns of W and V is 20%.

a) calculate expected return and standard deviation of a portfolio that invests 40% in W and 60% in V.

b) determine the minimum variance combination of W and V and determine its expected return and standard deviation.

c) If the risk-free rate is 4%, determine the tangency portfolio and derive the capital market line equation.