Asked by loli

Q: Marissa Is researching information about martial arts students. She found that 7 out of 12 martial arts students practice each day. there are 144 students at her school.

Part A: Predict how many students practice every day.

Part B: What Is The Sample Size?

I Think the answer to part A is 72, because 7 - 12 = 5 and 0.5 x 144 = 72.

I think part B is 7/12, 0.58, and 58%.
Answered by Reiny
"7 out of 12 " is a ratio
"ratio" suggests fractions
fractions mean division
What could possibly suggest that you would subtract 7-12 ??
and how did 5 turn into .5 ??

(7/12)(144) = 84
Answered by Koontalala
(Part A) First you need to figure out 7 out of 12 is what %?
7 ÷ 12= .58 (or 58%)
Then you need to figure what 58% of 144 is?
.58 x 144= 84 students practice everyday.
(Part B) She took a "sample" and asked 12 students, concluding that 7 of them practiced everyday.
The sample size is 12 students.
Hope this clarified by simple breakdown :)
Answered by Koontalala
I forgot to add: in Part B you may want to also include the fraction size, which is 7/12
Answered by "reeeeeee😝- nothing mom😶"
the answer
A. 84 Students practice every day
B. 12 is the sample size because 12 students were asked
Answered by enter name here...
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Answered by "reeeeeee😝- nothing mom😶"
meh duh, you dum?
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