Question

Marissa is researching information martial art students she found that 7 out of 12martial artist practice every day there are 144 martial arts students at a school predict how many students practice every day what is the sample size

Answer 1

84 students out of 144 students practice everyday.

Explanation:

Marissa is researching information martial art students, she found that 7 out of 12 martial artist practice everyday.

First we will find the percentage of the sample research.

`(7)/(12)` × 100

= 58.33%

There are 144 martial arts students, so we calculate 58.33% of total students.

`(58.33)/(100)` × 144

= 0.5833 × 144 = 83.995 ≈ 84 students.

84 students out of 144 students practice everyday.

Answer 2

So we want to know how many students out of 144 practice martial arts every day if we know that 7/12 practice every day. So lets multiply the numerator and the denumerator with 12. We will get (12*7)/(12*12)=84/144. And we got our answer: 84 out of 144 students practice every day.