To analyze the survey data using relative frequencies, we first need to calculate the relative frequencies for the music preferences of both 10th and 11th graders.
Step 1: Calculate relative frequencies
For 10th Graders:
- Total = 165
- Hip-Hop: \( \frac{112}{165} \approx 0.6788 \)
- Pop: \( \frac{53}{165} \approx 0.3212 \)
For 11th Graders:
- Total = 245
- Hip-Hop: \( \frac{98}{245} \approx 0.4 \)
- Pop: \( \frac{147}{245} \approx 0.6 \)
Step 2: Compare preferences
-
11th graders are more likely to prefer hip-hop over pop music.
- Relative frequency for hip-hop (11th Grade) is 0.4; for pop, it's 0.6.
- This statement is false.
-
If you like hip-hop, you are more likely to be an 11th grader.
- Relative frequency for hip-hop (10th Grade) is approximately 0.6788; for 11th Grade, it's 0.4.
- This statement is false.
-
10th graders are more likely to prefer hip-hop over pop music.
- Relative frequency for hip-hop (10th Grade) is approximately 0.6788; for pop, it’s approximately 0.3212.
- This statement is true.
-
If you like pop music, you are more likely to be a 10th grader.
- Relative frequency for pop (10th Grade) is approximately 0.3212; for 11th Grade, it’s approximately 0.6.
- This statement is false.
Conclusion
The true statement is:
10th graders are more likely to prefer hip-hop over pop music.