Answer
P(male) $=\frac{49,571}{75,330}=0.658$
Work Step by Step
The sample space: 75,330 drivers involved in fatal crashes in the United States in 2009. So, N(S) = 75,330.
According to the marginal distribution (see definition, page 235) of the first column: N(male) = 49,571.
P(male) = $\frac{N(male)}{N(S)}=\frac{49,571}{75,330}=0.658$
