Step 1: Based on the null and alternative hypotheses and given alpha, find a critical z-value (or z-values). Remember that alpha is the tail probability (in the right tail for the given alternative ...

Hypothesis testing is a branch of statistics in which, using data from a sample, an inference is made about a population ...

Having both null and alternative hypotheses offers competing views in your research. Researchers weigh the evidence for and against the two hypotheses using a statistical test. The statistical ...