Question 20 1 pts A stock with a beta of zero would be expected to have a rate of return equal to: the risk free rate zero. the average AAA bond. the prime rate the market rate. > Question 21 1 pts Amy and Andy have a portfolio with a beta of 1.26 and want to reduce the risk of the portfolio Adding which of the following securities is likely to lower the risk of the portfolio? Astock that has a standard deviation of 11 percent a stock with a beta of 2.5 US Treasury bills A mix of small company and large company stocks A stock with a beta of 2.25