It is meaningless, if you want an accurate estimate, or even, say, a 95%-confidence lower bound. But since we like to be pedantic on this forum, I’ll defend th

It is meaningless, if you want an accurate estimate, or even, say, a 95%-confidence lower bound. But since we like to be pedantic on this forum, I’ll defend the parent: if you want a true, 100%-confidence lower bound (ignoring the possibility of false reports), then that would be 5%. It’s a completely useless statistic, and you shouldn’t use it for anything, but it’s correct for the strictest possible interpretation of “lower bound”.