Calculate the 95% confidence intervals for the four different investments included in the following table. \begin{tabular}{ccccc} \hline & S\&P TSX Composite Index & S\&P 500 Index in CAD & Long-Term Gov't of Canada Bonds & Canadian Treasury Bills \\ \hline Average Return (\%) & 10.63 & 10.37 & 8.24 & 5.51 \\ Standard Deviation of Returns (\%) & 16.98 & 18.49 & 10.88 & 3.48 \\ \hline \end{tabular}