
Dear R list,

I calculated a two-sided p values according to 2*(1-pnorm(8.104474)), which gives  4.440892e-16. However, it appears to be  5.30E-16 by a colleague and 5.2974E-16 from SAS. I tried to get around with mvtnorm package but it turns out to be using pnorm for univariate case. I should have missed some earlier discussions, but for the moment is there any short answer for a higher precision? Somehow these days, statistical geneticists are infatuated with such tiny p values!

Many thanks in advance,


Jing Hua

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