Hypotheses and hypothesis testing

It’s a method that allows the analyst to test a statistical sample in order to investigate the null hypothesis. By measuring a random sample of the population, the analyst can test a hypothesis.  

Resource: Hypothesis Testing (Introduction to Applied Statistics for Psychology Students – University of Saskatchewan Open Press) 

Type: Textbook chapter 
Who it’s for: If you have ever been confused by what a null hypothesis, critical region, or type I/II error is, this resource is for you. 
Why we love it: Section 9 of this textbook provides a helpful overview of hypothesis testing and a lot of the vocabulary needed to understand hypothesis testing. In section 9.1 you’ll find a helpful set of problem solving steps for testing hypotheses.