[siegler]

based on this analysis, he said, "it's possible the Ripper could be female".

Based on this quote I've concluded that the Ripper was either male or female. Startling information indeed.

[JulianMorrison]

My prior would be p=0.167 (cite: Wikipedia, "one out of every six serial killers is a woman").

[reappear]

That's still way too high (after conditioning on the nature of the murders). Most all female serial killers are angels.