If they move to the left of the table, then those are the days she'll take bus A. If she moves them to the right of the table, those are the days she takes bus B. That's how she can make sure that this is truly random. All right. Then they tell us, the results, this is important, the results of the experiment show that the median travel duration for bus A is eight minutes less than the median travel duration for bus B. Or one way to think about it, if we said the treatment group median minus the control group median, what would we get? Well, the treatment group is eight minutes less than the control group.