Answer:
21^8
Step-by-step explanation:
YUUUUPPPPPP
Answer:
0- 11 times
1,2,3,4,5,6,7,8,9- 12 times
Elijah should interview every 5th student who enters the building in the morning. It would be a stratified sampling where Elijah will take a sample from each one out of five students.
The other methods would be a biased sampling as students who are in a school band or attending a concert or wearing earbuds in the cafeteria would likely to give a 'yes' answer.
