Answer
$P(female~|~Sunday)=\frac{4,325}{12,547}\approx0.345$
Work Step by Step
N(Sunday) = 12,547 and N(female and Sunday) = 4,325.
Using the Conditional Probability Rule (see page 288):
$P(female~|~Sunday)=\frac{N(female~and~Sunday)}{N(Sunday)}=\frac{4,325}{12,547}\approx0.345$