<prompt> Power is the ability toReject true null hypothesisReject false null hypothesisAccept true null hypothesisAccept false null hypothesis  <response>: Power is the probability of rejecting the null hypothesis when, in fact, it is false. Power is the probability of making a correct decision to reject the null hypothesis when the null hypothesis is false. Power is the probability that a test of significance will pick up on an effect that is present. Ref : 