
A First Course in Probability (10th Edition)
10th Edition
ISBN: 9780134753119
Author: Sheldon Ross
Publisher: PEARSON
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Transcribed Image Text:**Quiz Question: Analyzing Student Statistics**
**Question:**
Which statement is true?
**Options:**
A. 20% of her students are in the intermediate class.
B. 15% of her students are girls.
C. 25% of her students are in the beginner class.
D. 60% of her students are boys.
*Note: This question aims to test your understanding of statistical data related to a specific group of students. Consider each option carefully to determine which statement accurately reflects the given data.*

Transcribed Image Text:Miss Rose teaches three ballet classes. Her students' data are shown in the relative frequency table.
**Relative Frequency Table:**
| | Beginner | Intermediate | Advanced | Total |
|-------------|----------|--------------|----------|-------|
| **Boys** | 0.15 | 0.2 | 0.05 | 0.4 |
| **Girls** | 0.1 | 0.35 | 0.15 | 0.6 |
| **Total** | 0.25 | 0.55 | 0.2 | 1.0 |
**Diagram Explanation:**
- The table shows relative frequencies of boys and girls in three ballet class levels: Beginner, Intermediate, and Advanced.
- Each cell under "Beginner," "Intermediate," and "Advanced" represents the proportion of students in each category.
- The "Total" column shows the total relative frequency of boys and girls.
- Finally, the "Total" row represents the cumulative relative frequencies across all class levels for boys and girls combined, summing up to 1.0.
**Question:**
Which statement is true?
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