# Hypothesis testing and p-values | Inferential statistics | Probability and Statistics | Khan Academy

Neurologist A examines the outcomes of the drug on time Response by means of injecting one hundred mice into one drug unit. And then area each and every of them to nervous stimulation report response time. The neurologist is aware of that the average response time for mice Non-injected is 1.2 seconds The natural response time for the one hundred mice is 1.05 Sec with standard in variety With a deviation of zero.5 seconds Do you consider the drug has any outcome on response time? As a way to do that we must create two hypotheses we will say, one, the first speculation and we are going to go It has the nihilistic speculation, which is that The drug does not influence response time And your nihilistic hypothesis will consistently be — can To show up as public. It assumes that in spite of your search, it does no longer impact So medicinal drugs haven’t any influence Or an extra way of thinking about that is traditional The mice given the drug should be medium with the drug – let me I write it like this – the ordinary will remain 1.2 seconds, despite the fact that mice are given anesthetic And that allows you to recollect it does now not have an impact on, on account that we’re we all know that if the drug will not be administered, the traditional response time it’s 1.2 seconds Now what you want is an substitute hypothesis The speculation isn’t any, as i suspect the drug in reality it impacts So the substitute speculation is that drug is here has an influence Or yet another mind-set about it’s that the average does no longer Equals 1.2 seconds when the anesthetic is given So how do we believe of this? How do we know if we ought to be given the speculation alternative or we just have to be satisfied with the initial hypothesis Nihilism because the information isn’t convincing?