29

The average time between failures for a watch battery is 36 months. Determine the probability of failure before 36 months. \begin{tabular}{|c|} \hline 0.3679 \\ \hline 0.1354 \\ \hline 0.8646 \\ \hline 0.6321 \\ \hline 1.00 \\ \hline \end{tabular}