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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 use proportions:

7/12 = x/144

Cross-multiplying, we get:

12x = 7 * 144

Simplifying:

12x = 1008

x = 84

Therefore, we predict that 84 students practice martial arts every day.

b. The sample size is 144, as given in the problem.