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 18.57% 38.23% S&P 500 11.52% 20.27% Corporate Bonds 6.57% 6.52% T-Bills 4.08% 3.44% The 95% prediction interval of the S&P500 is between % and 1%. (Round to two decimal places and put the lower number first.)