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.
See http://www.selectCDrates.com. Usually, each check is good for six months after it's written (unless stated otherwise on the check). Since you put a stop payment on it, though, that company won't be able to do anything with it. A personal check is void/stale dated 12 months after it is written.