A survey was conducted with high school students in each grade to see how many participate in sports. The data are shown below.
A 6-column table with 3 rows. The first column has no label with entries sports, no sports, total. The second column is labeled 9 with entries 63, 51, blank. The third column is labeled 10 with entries 52, 45, blank. The fourth column is labeled 11 with entries 35, 21, blank. The fifth column is labeled 12 with entries 41, 36, blank. The sixth column is labeled total with entries blank, blank, 344.
Which statement is true about the marginal frequencies in this table?
191 students play sports and 150 students do not.