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.
The last digit is always 7 but they are new and this is 08. As a buyer of a lot of food I will say that if I buy a bag in Feb. of this year and it has a date of May 20 it is usually stale after that date of this year.