2 i hope this helps ok bye
I'm assuming the question looks like this?

If so then the answer should be:

Hope this helps!
Answer:
Some of the 50 students should have been assigned to a control group that used the in-person course
Step-by-step explanation:
Answer:
You're trying to buy a video game that costs $40 with a $50 bill. The cashier gives you $10 change, which is the remainder.
Step-by-step explanation: