Answer: 1:4
Step-by-step explanation:
3:12 written as a fraction is 3/12
Simplify:
3/12 = 1/4
Answer: D
"Separating the students on the list into boys and girls and choosing a sample from each group that is proportional to the size of the group."
Step-by-step explanation:
You are sampling an equal amount of boys and girls since your getting an equal sample of each gender. (Not random)
Answer:
136
Step-by-step explanation
multiply 4 by 31 and add 20
