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Question

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.
a. Predict how many students practice every day.
b. What is the sample size?

Answer 1

a. To predict how many students practice every day, we can set up a proportion:

7/12 = x/144

where x represents the number of students who practice every day. To solve for x, we can cross-multiply:

12x = 7 * 144

12x = 1008

x = 84

Therefore, we predict that 84 students practice every day.

b. The sample size is 144.