Walter jasper currently manages a $500,000 portfolio. he is expecting to receive an additional $250,000 from a new client. the existing portfolio has a required return of 11.2 percent. the risk-free rate is 2.8 percent and the return on the market is 11 percent. if walter wants the required return on the new portfolio to be 13.3 percent, what should be the average beta for the new stocks added to the portfolio?