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The quantum physics joke is that the coin lands and stays on it's side, and is both heads and tails at the same time. Wave/Particle duality rocks!
Student B is correct. Although you would expect 10 heads and tails from 20 coin tosses, this number changes with the additional information of the 4 heads.
I guess that it'll land in akward position between two objects and thus land neither on heads or tails
I think my biology professor said it best:
I'm a little rusty on my probability theory and I don't want to give you the wrong answer, so you may want to see what someone else says...
True. I guessed student A because I guess I didnt read it real good. I didn't see the expect part. I was taking it for the whole instead of the next flip.
I would agree with Student B because the probability of tossing heads is always 50%...just because you have already seen the outcome of the first four tosses does not change the likelihood of the next outcome.
A person sets out to toss a coin 20 times. On average, they expect to get 10 heads and 10 tails.