Assets 8-17 PORTFOLIO BETA A mutual fund manager has a $20 million portfolio with a beta o The risk-free rate is 4.5%, and the market risk premiumn is 7%. The manager expe receive an additional $5 million, which she plans to invest in a number of stocks investing the additional funds, she wants the fund's required return to be 15% Water should be the average beta of the new stocks added to the portfolio? After