what is the importance of power function what is the power of an empirical model when it has no impact on statistical significance? what is the power of a model what is a power of 0.8 definition of power what does it mean when the power is 0.8 what is power of 0.8 in psychology why is p value 0.8 needed what is the power function for an empirical model what is the power of 0.8 what is the difference between power of the power and confidence in the hypothesis what is power in research how to determine the importance of a model how to determine if a hypothesis is ruled out which of the following would have a power of 0.8 what is the power of an empirical test how to find and validate a hypothesis what is an example of power definition of power of 0.8 why does a power of 0.8 mean that only two true hypotheses are ruled out because their effects are not picked up in the data?