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Is there a way to increase the precision for the scipy.stats functions norm.pdf and t.cdf? Because if I do this it works:

from scipy.stats import norm, t
norm.ppf(t.cdf(9, 140))

but if I do the following, I got "inf" for the pdf and "1.0" for the cdf:

norm.ppf(t.cdf(10, 140))

Thanks in advance

user3177899
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    Ok so no solution to this! Seems like the limit is about 8.2 (8.2sigma in fact). So if we want to know the detection level >8.2sigma, let's say a detection at 35sigma for instance, it is not possible :-/ – user3177899 Aug 05 '21 at 14:14

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