I'm asking for layman's terms (Although you can include formulae as well if necessary - they justy need to be translated into words) because I'm a first-year university student and I'm only covering business statistics over one semester.
I understand that critical values are worked out using probability distributions, but in two tailed tests, the critical value - in my experience - is always 1.96 or 1.645.
Why is this so, and for the mean, what is the critical value there? Unless this is true, don't tell me it depends on question and statistics bering worked out - I'm talking about in terms of percentage here.
I know it's badly worded, but I've no idea how else to put it!! PLEASE help as best you can!
2007-03-11
05:27:19
·
6 answers
·
asked by
swelwynemma
7
in
Mathematics