Calculate the 95% prediction intervals for the four different investments included in the following table.
Small Stocks 
S&P 500 
Corporate Bonds 
TBills 

Average Return 
18.12% 
11.39% 
6.28% 
4.85% 
Standard Deviation of returns 
39.31% 
20.96% 
7.02% 
3.75% 
The 95% prediction interval of small stocks is between % and %. (Round to two decimal places and put the lower number first.)
The 95% prediction interval of the S&P500 is between % and %. (Round to two decimal places and put the lower number first.)
The 95% prediction interval of corporate bonds is between % and %. (Round to two decimal places and put the lower number first.)
The 95% prediction interval of Tbills is between % and %. (Round to two decimal places and put the lower number first.)
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