Free points!

good night/morning guys! I wish you all a positive and successful 2021

Thanks, i wish you a great 2021 as well

Thank you you, you to

Step-by-step Explanation:

I do not know the persons name, which is why I said you. The step by step explanation I provided earlier was because I was embarrassed I didn't cover the whole concept of the question. I'll cover it now though, "thank you" is saying thank you for the free points. And the, "you to" is for wishing the positive and successful year. I said it because you did me a favor and I needed to do one back to be nice back, I didn't hear the tone of the voice so I assume you where being nice.

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.