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?
a. To find out how many students practice every day, we can use proportions. If 7 out of 12 students practice every day, we can set up a proportion:
7/12 = x/144
where x is the number of students who practice every day. Cross-multiplying, we get:
12x = 7*144
Simplifying, we get:
x = 84
Therefore, we predict that 84 martial arts students practice every day.
b. The sample size is the total number of martial arts students, which is given as 144.
a. To predict how many students practice every day, we can set up a proportion using the information given. We know that 7 out of 12 martial artists practice every day, so we can set up the proportion:
7/12 = x/144
To solve for x, we cross-multiply:
12x = 7 * 144
12x = 1008
Dividing both sides by 12:
x = 1008/12
x ≈ 84
So, based on the research, we can predict that approximately 84 martial arts students practice every day.
b. The sample size is the total number of martial arts students in the school, which is given as 144. Therefore, the sample size is 144.