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.
In my case, one of the two checks was a $5.25 issue from a brokerage firm and the other was a small check from a publishing company. They were from late March, so within days of becoming stale, the point when they're old enough that a bank just might not accept them.he time limits written on the face of the check, whether it is 60 days or six months, often mean the issuer is trying to keep the books as up-to-date as possible. They tend to be more of a guideline than a hard rule. That's, in fact, what employees at my bank said when suggesting that I put the two checks through.