1. **State the problem:** We are given a data table showing how many students play an instrument and/or a sport. We need to find the probability that a randomly chosen student plays both a sport and an instrument.
2. **Data from the table:**
- Plays instrument and sport: 8
- Plays sport but not instrument: 2
- Plays instrument but not sport: 5
- Plays neither: 7
3. **Total number of students:**
$$8 + 2 + 5 + 7 = 22$$
4. **Formula for probability:**
$$P(\text{sport and instrument}) = \frac{\text{number who play both}}{\text{total number of students}}$$
5. **Calculate the probability:**
$$P = \frac{8}{22}$$
6. **Simplify the fraction:**
$$\frac{8}{22} = \frac{\cancel{2} \times 4}{\cancel{2} \times 11} = \frac{4}{11}$$
7. **Final answer:**
The probability that a randomly chosen student plays both a sport and an instrument is **$\frac{4}{11}$**.
Probability Sport Instrument Ec5A99
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