Calculate the 95% prediction intervals for the four different investments included in the following table:

The 95% prediction interval of small stocks is between % and %

	Small Stocks	S&P 500	Corporate Bonds	Treasury Bills
Average Return	17.93%	12.22%	6.18%	3.29%
Standard Deviation of Returns	37.89%	19.65%	6.34%	3.11%