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 information below S&P 500 11 .55% 20.13% Corporate Bonds 6.07% 6.51% T-Bills 3.09% 3.67% Small Stocks 18.36% 39.23% Average Return Standard Deviation of returns Round to two decimal places and put the lower number first % and % The 95% prediction interval of the S&P500 is between