How many people do you see in a museum

It depends. If the museum is famous and popular then there could be more than 100 people there. If the museum is small and unknown, then there could be very small groups. I didn't really understand your question but I hope this helps!

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.        

aren't cheetos good enough to be president?