Answer:
I THINK THE SECOND ONE
Step-by-step explanation:
The single digit to the left of the vertical line is the tens units, the numbers to the right are the ones.
The scores above 64, would be 65, 73, 74, 77, 87, 88, 91, 93, 93, 97, 99, 99
A total of: 12 scores.
18 t - 18 t * 30% = 18 t - 17 * 0,3 = 18 t - 5,4 t = 12,6 t
This is an example of a systematic sample.
Dr. Jon developed a system in order to get a random sample. His plan was to survey the 4th student that entered his classroom.
The ones with a square in a picture is a 90 degree angle the rest are a 180