## Thinking Mathematically (6th Edition)

$\frac{2}{21}$
If A and B are dependent events, then P(A and B) = P(A) *P(B given that A has occurred) E: Two Democrats. A: A Democrat B: A Democrat given that one has already been selected P(A) = $\frac{5}{15}$ P(B) =$\frac{4}{14}$ P(E) = $\frac{5}{15}$ .$\frac{4}{14}$ P(E)=$\frac{2}{21}$