Thanks Vorlon for the lesson. 
I did not get how you got 68% and 95% thing. I am going to re-read it and if I still don't understand I will probably ask you.
BTW - Cangratulations "Senator" shapeshifter... 
68% is 1 standard deviation in a bi-nomial expansion
95% is 2 standard deviations in a binomial expansion
There is nothng "magical" about 68% and 95% - just two places where the math is easy 
assumes the questions is evenly divided (ie the "true" result is 50/50) as a practical matter untill you get to huge splits (say 70/30) the difference between the Binomial expansion error and the true error are minimal.
O now I understand.
I was wondering, where the hell you got those number.
Thanks again for the info and the congradulation.
Senator Shapesh**tter.
