Answer:
-7.333
Step-by-step explanation:
The median would be: 7.9
and the mean would be:7.4714285714 (you are able to chop that down a bit if needed)
Multiply the number together ....
(-3x)4 = -12x
I think the answer is (6,-4)
I would argue that it does due to that if it increased, it's either from a 30% chance that nothing changed or that the teachers did it. Since 100-30=70, there's a 70 percent chance that the teaching effect did work!
