Is testing members of a group together a sample size of 1? Say you are measuring the decisions of 50 people in a room. They must either choose to go to the blue corner or the red corner. You count the number of people in each corner. Is this a sample size of 50 or 1?
I can see that the choices are not necessarily independent of each other, but also that this isn't a given.

I mean, it depends on if this is a controlled experiment or not. Normally you would want to try to manipulate the experimental condition in a way that is able to be modeled on other populations, so in this case a best case scenario is to split up the paradigm between 25 people in one condition (blue or red) and 25 in another (whatever color doesnt already have 25 people). A 49-to-1 paradigm would be a bit odd to draw valid statistical inference from.
