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Mr Sam started building on his portfolio with two best performing stocks - APPX and NOKIZ. The table below shows the expected returns and standard deviations of both listed stocks. APPX NOKIZ 9% 6% Expected Return Standard Deviation 15% 10% REQUIRED (a) Given that both assets are equally weighted, calculate the expected returns of the portfolio. [3 marks] (b) Assuming the correlation coefficient is 20%, calculate the standard deviation of the portfolio. [5 marks] The Government announced several favourable measures relating to the industry of APPX. This positive headline triggered an interest to Mr Sam to revise his portfolio. The weightage of APPX now stands at 63%. (c) Calculate the standard deviation of the portfolio. The correlation coefficient is 30%. [5 marks]