Refer to Table 3.10.
What is the conditional probability of "regular," given "high income"?
$$
\begin{aligned}
&\text { Table 3.10 Probabilities for Television Viewing and Income }\\
&\begin{array}{|lcccc|}
\hline \text { Viewing FrequenCY } & \text { High INCOMe } & \text { Middle INcome } & \text { Low Income } & \text { Totals } \\
\hline \text { Regular } & 0.10 & 0.15 & 0.05 & 0.30 \\
\text { Occasional } & 0.10 & 0.20 & 0.10 & 0.40 \\
\text { Never } & 0.05 & 0.05 & 0.20 & 0.30 \\
\text { Totals } & 0.25 & 0.40 & 0.35 & 1.00 \\
\hline
\end{array}
\end{aligned}
$$