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 18.19% 38.77% S&P 500 11.84% 20.43% Corporate Bonds 6.58% 7.35% T-Bills 3.55% 3.26% The 95% prediction interval of the S&P500 is between % and %. (Round to two decimal places and put the lower number first.)