The funny thing is that even though this question is practically impossible (i.e. the paradox of the heap as it's absurd to really say .00000015% is fine but .00000014% isn't), statistics is one of the few times that the experts just say "pick a significance level that makes sense" which are usually 5%, 1%, .1% or .01%. Of course, this should take into account out of total runs and not just the one in question, and it's highly suspect that this isn't really possible anymore because dream went back and destroyed records of his past attempt, I believe.
The funny thing is that even though this question is practically impossible (i.e. the paradox of the heap as it's absurd to really say .00000015% is fine but .00000014% isn't), statistics is one of the few times that the experts just say "pick a significance level that makes sense" which are usually 5%, 1%, .1% or .01%. Of course, this should take into account out of total runs and not just the one in question, and it's highly suspect that this isn't really possible anymore because dream went back and destroyed records of his past attempt, I believe.