(Solved):
Consider the following probability mass function. Let's define \( X \) as the number of earthquake ...
Consider the following probability mass function. Let's define \( X \) as the number of earthquakes. What is \( \mathrm{P}(\mathrm{X}<=1) \) ? \begin{tabular}{c} \( 0.9 \) \\ \( 0.1 \) \\ \hline \( 0.4 \) \\ \hline \( 0.5 \) \end{tabular}