In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.

Question: If after establishing the confidence interval with respect to a difference between two independent means, we find that the zero value is not in the interval:
Options: <0> We can not make any decision regarding the null hypothesis of equality of means. <1> We can not reject the null hypothesis of equality between population means. <2> We must reject the null hypothesis of equality between population means. <3> We accept the null hypothesis of equality between the population means. <4> We reject the alternative hypothesis of equality between population means.
psychology