Answer: 1. Boys are more likely to wear a red shirt than girls
2. Eighth graders are less likely to prefer math than 7th graders
1. We need to calculate the percentage of boys wearing red shirts, which is 10/25, or 40%
Then, we can calculate the percentage of girls wearing red shirts and compare the results.
The percentage of girls wearing red shirts is 5/20 or 25%
Since 40%>20%, we can say that boys are more likely to wear red shirts, or a positive association
2. The same can be done for the second question between the 8th graders and preferring math.
Hope this help!