Power is the probability that a study will reject the null hypothesis. The estimated. probability is a function of sample size, variability, level of significance, and the. difference between the null and alternative hypotheses. Similarly, the sample size. required to ensure a pre-specified power for a hypothesis test depends on variability, level of significance, and the null vs. alternative difference.
Nature of stale check. Stale check is a check that is presented to be cashed or deposited at a bank six months or more after the date it was written.
Definition. Check presented at the paying bank after a certain period (typically six months) of its payment date. A stale check is not an invalid check, but it may be deemed an 'irregular' bill of exchange.A bank may refuse to honor it unless its drawer reconfirms it payment either by inserting a new payment date or by issuing a new check. Also called stale dated check.heck presented at the paying bank after a certain period (typically six months) of its payment date.