\begin{table}%t2
    \caption{Results of the two-sample tests. The tested hypothesis
      was $H_0$:$F_1 (t) = F_2 (t)$: both samples are equal. The
      probability~$p$ of~$H_0$ being true is given for the three
      tests. This shows that the two~samples must be considered equal.}
    \label{tab:tests}
%\centering
\par
 \begin{tabular}{lccc}
\hline\hline
 &        Wilcoxon   Perm. &  Wilcoxon Hyp. &  Log-rank
\\
\hline
$p$          &    0.79 &   0.79 &   0.75 \\
\hline
    \end{tabular}
\end{table}