Answer:
Option C is correct. Option f is the same as option C
Step-by-step explanation:
From the question, There are three high schools in the district, each with grades between nine to twelve. The school board decided to pool all of the students together and randomly samples 250 students in the whole district that has schools between the grade of nine to twelve.
In order to test for high school students in the district for Attention Deficit disorder(ADD), they could have chosen any 250 students from any school with grades betweem nine to twelve throughout the district.
You would make them all over 10, then subtract them from
The probabilities are
Add them together, you get,
so
Division is repeated subtraction. By subtracting a number multiple times, you see how many times it can go in to a number, therefore you are dividing.