Answer
The required probability is, $\frac{37}{121}\approx 0.31$
Work Step by Step
We know that from the provided table,
$ P\left( \text{never married person} \right)=\frac{\text{number of persons never married}}{\text{total number of U}\text{.S adults}}$
Thus,
$\begin{align}
& P\left( \text{never married person} \right)=\frac{74}{242} \\
& =\frac{37}{121} \\
& \approx 0.31
\end{align}$
