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...ence between two poulations is significant. I have a large N=20,000, 10,000 in each population. I compare a few different poulations with eachother and though I get different t-scores, I get the same p-value of 10^-16 which seems like the limit for this function. Is this true and is so, is there a workarounf to get a more sensitive/accurate p-value? Thanks [[alternative HTML version deleted]]

I use FireFox as my favourite web browser on my Mac OS/X 10.5 I double-checked that Java and Java scripts are enabled for FireFox. Nevertheless, I cannot use R on-line search help. I called Apple Tech Assistance but they do not support FireFox. We tried to set Saphari as the favourite browser but evidently R does not support it. Does any one knw of a workaround this annoying problem ? Thanks a