Question

eddie will enter high school next year. his older brother tells him that everybody in high school plays a musical instrument. skeptical, eddie decides to investigate. throughout the next month, he asks a randomly selected sample of high - school students whether they play an instrument. the table shows what eddie finds. rounded to the nearest tenth of a percent, what percentage of all students that play an instrument are in 10th grade? (ignore the % symbol when entering your answer. for example, if the answer is 32.4%, enter 32.4.)

Explanation:

Step1: Identify the number of 10th - grade students who play an instrument and the total number of students who play an instrument

The number of 10th - grade students who play an instrument is \(3\). The total number of students who play an instrument is \(24\).

Step2: Calculate the percentage

The formula for percentage is \(\frac{\text{part}}{\text{whole}}\times100\). Here, the part is the number of 10th - grade students who play an instrument (\(n = 3\)), and the whole is the total number of students who play an instrument (\(N=24\)). So the percentage \(P=\frac{3}{24}\times 100\).

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Answer:

\(12.5\)