A researcher conducts an experiment comparing two treatment conditions with 20 scores in each treatment condition.
a. if an independent-measures design is used, how many subjects are needed for the experiment

Respuesta :

To determine the number of subjects that are needed for the experiments, we multiply the number of independent variables with the number of scores. For example, there are n independent variables then, there are approximately,

                                number of subjects = 20 x n = 20n