In our example, the null hypothesis (Ho) and the alternative ... corresponds to a critical value of +/-1.96 for a two-tailed test. Since -0.69 is bigger than -1.96, we have to accept the null ...

Hypothesis testing is a formal procedure for investigating our ideas about the world using statistics. It is most often used by researchers to test predictions, called hypotheses. The first step in ...

In this module, we will expand the lessons of Module 1 to composite hypotheses for both one and two-tailed tests ... to identify when hypothesis tests based on these distributions are appropriate. We ...