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.

Question

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%.

Answer 1

"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

Answer 2

(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 :)

Answer 3

I forgot to add: in Part B you may want to also include the fraction size, which is 7/12

Answer 4

the answer
A. 84 Students practice every day
B. 12 is the sample size because 12 students were asked

Answer 5

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Answer 6

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Answer 7

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Answer 8

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Answer 9

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