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. Small Stocks S&P 500 Corporate Bonds T-Bills Average Return 19.39% 11.29% 6.92% 3.68% Standard Deviation of returns 39.11% 19.15% 6.91% 3.99% The 95% prediction interval of the S&P500 is between % and [%. (Round to two decimal places and put the lower number first.)