P 11-21 (similar to Question Help * if returns of S&P 500 stocks are normally distributed, what range of returns would you expect to see 95% of the information below time? Base your answer on the Corporate Bonds 6.37% 6.62% T-Bills Small Stocks 19.29% 39.87% S8P 500 11 .62% 20.69% Average Return Standard Deviation of returns 4.03% 3.21% The 95% prediction interval of the S&P500 is between % and %. (Round to two decimal places and put the lower number first.)