Transcript text: Random Variables and Distributions
Making predictions using experimental data for compound events
Silve
A school gave some of its students an assessment on two subjects: language and math. Each student's score was classified as at grade level, above grade level, or below grade level for each subject.
Here is a summary of the data the school got after assessing 225 students.
\begin{tabular}{|c|c|c|}
\hline Language & Math & \begin{tabular}{c}
Number of \\
students
\end{tabular} \\
\hline at grade level & at grade level & 14 \\
\hline at grade level & above grade level & 26 \\
\hline at grade level & below grade level & 39 \\
\hline above grade level & at grade level & 19 \\
\hline above grade level & above grade level & 18 \\
\hline above grade level & below grade level & 23 \\
\hline below grade level & at grade level & 37 \\
\hline below grade level & above grade level & 27 \\
\hline below grade level & below grade level & 22 \\
\hline
\end{tabular}
Suppose the school will assess 150 more students.
How many of these 150 students will score below grade level in exactly one subject? Use the data to make a prediction. $\square$