Bug in BINOMIAL_ICDF

[Dieter]

(10-18-2015 08:50 PM)Tim Wessman Wrote:  The target is .05. There only seems to be one possible result there that works to me. Note that every math program I've tried here agrees it should be 8 as well.
Why then would the inverse not hold true? 7 would be too small. 8 contains your desired target.

I'd agree here.

(10-18-2015 08:50 PM)Tim Wessman Wrote:  Are you advocating a non-integer result? How would that be definted since we are talking about trials here?

The two major discrete distributions (Binomial and Poisson) can be expressed in terms of Beta resp. Gamma functions. This way they can be extended to the real domain (think Gamma and factorial) and non-integer results become possible. In this particular case the real result is 7,86528650471. But I haven't seem this kind of result on a commercially available calculator yet. ;-)

Dieter