I have a question that i actually can not solve. Can someone please help me?
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?
You're welcome.
7/12 = 0.5833
Multiply 0.5833 by 144.
Found the answer to a. just need help on the sample size!
The answer is in the problem.
ohhhh... i get it now! thanks!
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?
The answer to a is: 7/12 x 144 = 84 students practice every day.
The answer to b is: The sample size is 144, as stated in the problem.
why is the sample size 144?
The sample size is 144 because the question states that "there are 144 martial arts students at a school". In research, the sample size refers to the total number of participants or subjects in a study or survey. In this case, the entire population of martial arts students at the school is 144, so it is also the sample size.
Of course, I will be happy to help you with your question!
To answer part (a) and predict how many students practice every day, we can use proportions. We are given that 7 out of 12 martial artists practice every day. We can set up a proportion to find out the number of students who practice every day out of the total number of students.
Let's call the number of students who practice every day "x". We can set up the proportion as follows:
7/12 = x/144
To solve for "x", we can cross multiply and solve for "x":
12 * x = 7 * 144
12x = 1008
x = 1008/12
x ≈ 84
So, we predict that approximately 84 students practice martial arts every day.
For part (b), the sample size is the total number of martial arts students at the school. According to the question, there are 144 martial arts students at the school. Therefore, the sample size is 144.