In hypothesis testing what is the level of significance It i

In hypothesis testing, what is the level of significance?

It is selected by the researcher before a decision rule can be formulated.

Risk of rejecting the null hypothesis when it is true

Solution

The answer is OPTION C: ALL OF THESE ARE TRUE.

The level of significance is chosen by the researcher beforehand, and it is also the risk of a type I error, and it is between 0 and 1.