Chapter 8.3, Problem 27E

In Problems $23\text{-}42$, use the table below. Events $A,B$, and $C$ mutually exclusive; so are $D,E$, and $F$.

In Problems $27\text{-}34$, compute each probability using formula ( $1$ ) on page 423 and appropriate table values.

$P\left(D\left|B\right.\right)$