And just like we did before, you say, okay, let's say the drug doesn't lower our response time. If the drug doesn't lower our response time, what was the probability, or what is the probability of getting a lowering this extreme or more extreme? So here it will only be one of the tails that we consider when we set our alternative hypothesis like that, that we think it lowers. So if our null hypothesis is true, the probability of getting a result more extreme than 1.05 seconds, now we are only considering this tail right over here. Let me put it this way. More extreme than 1.05 seconds, or let me say lower, because in the last video we cared about more extreme, because even a really high result would have said, okay, the mean is definitely not 1.2 seconds. But in this case we care about means that are lower.