The policy-making committee of Bank ABC recently used reports from its securities analysts to develop the following efficient equity only portfolios.

i. If the risk free rate of interest is 5% which portfolio is best?

ii. Assume that the policy-making committee would like to earn an expected rate of return of 20% with a standard deviation of 10%, is this possible?

iii. If a standard deviation of 30% was acceptable to the investment committee, what would be the expected return and how could it best be achieved?

iv. Assume that the correlation coefficient between all of the above portfolios is zero. What is the expected rate of return on a combined portfolio made up of all the above 5 portfolios with an equal weighting given to each portfolio?

Standard deviation Equity Portfolio 1 2 3 4 5 Expected rate of return 8% 10% 15% 20% 25% 5% 6% 8% 13% 18%