If returns of S&P 500 stocks are normally distributed, what range of returns would you expect to see 95% of the time? Base your answer on the information below. Average Return Standard Deviation of returns Small Stocks 18.09% 39.24% S&P 500 11.84% 20.44% Corporate Bonds 6.48% 6.55% T-Bills 3.94% 3.73% The 95% prediction interval of the S&P500 is between % and %. (Round to two decimal places and put the lower number first.)