Level 7: Coordinate ideas about sample-to-sample stability and variation to reason about samples as representing sets from populations.
7B
Compare two objects (conditions, etc.) by considering the variations in the sampling distributions of their statistics.
"The mean effective time of pill A usually varies from here to here (student indicates a region of the distribution), and the mean of B varies from here to here (student indicates another region). They don’t overlap much, so I think pill A is different than B."