First blank: not random Because he sent it to the top 5 students. Not random students throughout the grade.
second blank: I would guess not valid because it was not a random sample.
Step-by-step explanation:
k=8.6
i think it is the right answer
Answer:
the spread for brand a and b are equal
Step-by-step explanation:
Brand A range = 22 − 18 = 4
Brand B range = 18 − 14 = 4
4 − 4 = 0
