Answer
$P(female~|~passenger)=\frac{6,363}{12,816}\approx0.496$
Work Step by Step
N(passenger) = 12,816 and N(female and passenger) = 6,363.
Using the Conditional Probability Rule (see page 288):
$P(female~|~passenger)=\frac{N(female~and~passenger)}{N(passenger)}=\frac{6,363}{12,816}\approx0.496$
