The expected rates of return and the possibilities of their occurrence for Alpha company Beta company shares are given below: Probability of Occurrence Return on Alpha Share Return on Beta Share 0.05- 2.0- .00.5012.011.00.2015.014.00.0526.019.0. (a) Find out the expected rates of return for Alpha and Beta shares. (b) If an investor invests an equal proportion in both the shares, What will be the expected rate of return for the investor's portfolio?