Your test gives you a p value of 0 03 so you reject the null

Last updated: 10/18/2023

Your test gives you a p value of 0 03 so you reject the null hypothesis that parents and non parents have the same mean of cortisol levels But what does your p value mean O There is still a 3 chance that the null hypothesis is correct O 97 of parents are more stressed than any of the non parents and vice versa If you repeated this study with a new set of samples from each population you would find a difference like this between parents and non parents 97 of the time You would find a difference like this between parents and non parents 3 of the time even if the two groups have the same cortisol levels There is only a 0 03 chance that the null hypothesis is correct