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.
a. Predict how many students practice every day.
b. What is the sample size?
a. To find how many students practice every day, we can set up a proportion:
7/12 = x/144
To solve for x, we can cross-multiply:
12x = 7 * 144
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.
To answer these questions, we can use proportions.
a. To predict how many students practice every day, we can set up a proportion using the information given:
7 out of 12 students practice every day.
Let's set up the proportion:
7/12 = x/144
Cross-multiplying:
12x = 7 * 144
Simplifying:
12x = 1008
Dividing both sides by 12:
x = 84
Therefore, we predict that 84 students practice every day.
b. The sample size is given as 144 martial arts students.