If so, how do I find the p-value of such a z-score?

For those wondering, it was a "difference between two proportions" test I done.

- Apr 22nd 2010, 11:38 AMMickQWhen performing a Hypothesis Test, I got a z-score of 20.204. Is that possible?
If so, how do I find the p-value of such a z-score?

For those wondering, it was a "difference between two proportions" test I done. - Apr 22nd 2010, 12:08 PMRandom Variable
It's possible. The p-value would then be approximately zero, which would mean that you could reject the null hypothesis in favor of the alternative hypothesis at any alpha level.

EDIT: Well, technically you still couldn't reject it at $\displaystyle \alpha =0 $.