So drug has no effect. Or another way to think about it is that the mean of the rats taking the drug should be the mean with the drug is still going to be 1.2 seconds, even with the drug. So that's essentially saying it has no effect, because we know that if you don't give the drug, the mean response time is 1.2 seconds. Now, what you want is an alternative hypothesis. The hypothesis is, no, I think the drug actually does do something. So the alternative hypothesis right over here is that the drug has an effect. Or another way to think about it is that the mean does not equal 1.2 seconds when the drug is given.