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.
R.G., Cleveland. A: There is no federal banking law about stale checks that indicates checks with certain dates aren't good. Banks won't necessarily reject any check because of the date on it. It's a myth that banks won't accept checks more than six months old or that carry a future date. (This is why post-dating a check protects you from exactly nothing.) Banks accept or decline checks based on whether they think the check is good.