Question: Assume we want to test a null hypothesis about a single mean at one-tailed. Further assume that all necessary assumptions are met. Is there ever

Assume we want to test a null hypothesis about a single mean at one-tailed.

Further assume that all necessary assumptions are met. Is there ever a case in which we are more likely to reject a true than we are to reject if it is false? (In other words, can power ever be less than ?)

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