Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
Marissa is researching information about martial arts students. She found that 7 out of 12 martial artists practice every day. There are 144 martial arts students at a school. The sample is the measure of the group size used for the research.
a. Predict how many students practice every day.
b. What is the sample size?
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a. To predict how many students practice every day, we can use a proportion.
7/12 = x/144
Cross-multiplying, we get:
12x = 7 * 144
Simplifying:
x = (7 * 144)/12 = 84
Therefore, we can predict that 84 students practice every day.
b. The sample size is given as 144.