Children were randomly assigned to one of two groups: One group enrolled in a certain preschool, and one did not enroll. Follow-up studies were done for decades to answer the research question of whether attendance at preschool had an effect on high school graduation. The table shows whether the students graduated from regular high school or not. Students who received GEDs were counted as not graduating from high school. This is a test of homogeneity, because the students were randomized into two distinct samples. Complete parts a and b below.
Click the icon to view the table summarizing the data obtained from the studies.
a. For those who attended preschool, the high school graduation rate was \( \frac{38}{58} \), or \( 65.5 \% \). Find the high school graduation rate for those not attending preschool, and compare the two. Comment on what the rates show for these subjects.
For those who did not attend preschool, the high school graduation rate was \( \square \) \( \% \).
(Round to one decimal place as needed.)
Summary of data obtained from the studies
\begin{tabular}{|l|c|c|}
\hline & Preschool & \begin{tabular}{c}
No \\
Preschool
\end{tabular} \\
\hline HS Grad & 38 & 26 \\
No HS Grad & 20 & 30 \\
\hline
\end{tabular}
