# How is p-value related to alpha?

We reject null hypothesis if p-value is less than $\setminus \alpha$
$\setminus \alpha$ = significance level that a researcher sets before conducting the test. $\setminus \alpha$ = probability of type 1 error.
Relation: We reject null hypothesis if p-value is very small, more precisely, when it is smaller than the significance level $\setminus \alpha$