Suppose you are the money manager of a million dollar investment fund. The fund consists of four stocks with the following investments and betas:\ \ Stock Investment Beta\ Alpha $175,000 -1.50\ Bingo $450,000 -1.00\ Charlie $250,000 0.50\ Delta $125,000 2.00\ \ \ \ \ \ \ \ \ \ \ \ \ \ a) Calculate the fund's beta.\ \ \ b) If the market's required rate of return is 10% and the risk-free rate is 3%, what is the fund's required rate of return?