Hi all,
I’ve noticed that if you have some concepts clear you might be able save many valuable seconds when answering this type of questions.
As an example, and far as I understand, the t-student critical value is always more conservative than the Z one. Which means that it will be more difficult to reject the Ho using a t-student critical value.
If within a question, the computed test statistic doesn’t fall within the rejection range of the Z’s critical value, I believe I can infer that will neither fall in the t-student critical value. It his accurate? Is this accurate regardless the sample size? If so, I could save some precious seconds if I see that the calculated test statistic doesn’t fall in Z’s range (I will have memorized the values) and I wouldn’t need to calculate the t-student critical range.
Do you know any other similar tricks that might allow to save some seconds?
Regards