Question

# The two-way table summarizes data on whether students at a certain high school eat regularly in the school cafeteria by grade level. \text{Grade}\ \te

Two-way tables

The two-way table summarizes data on whether students at a certain high school eat regularly in the school cafeteria by grade level.

$$\text{Grade}\ \text{Eat in cafeteria} \begin{array}{l|r|r|r|r|r} & 9 \mathrm{th} & 10 \mathrm{th} & 11 \mathrm{th} & 12 \mathrm{th} & \text { Total } \\ \hline \text { Yes } & 130 & 175 & 122 & 68 & 495 \\ \hline \text { No } & 18 & 34 & 88 & 170 & 310 \\ \hline \text { Total } & 148 & 209 & 210 & 238 & 805 \end{array}$$

If you choose a student at random who eats regularly in the cafeteria, what is the probability that the student is a 10th-grader?