RoseMontague
Published Author
I cannot estimate it in numeric value, as I am neither a DNA expert nor a statistician. However, I can, as a scientifically literate, educated person, estimate that the likelihood of AK's DNA being in even one of exactly those three spots (five, in the whole house) is very small. People do not generally leave their DNA around their house, on every surface. Dead skin cells that exfoliate do not generally have DNA. To get my DNA on my sink, for instance, I would have to rub my fingers on the sink, or wash my hands quite vigorously, and the DNA would probably wash down the drain, unless contained within a drop of blood of someone I had just murdered.
Then, realize that each instance of improbability must be multiplied by each other instance, as statistics tell us (I may not be a statistician, but I have taken both undergrad and graduate level statistics classes). Thus a small, very tiny improbability multiplied by itself 5 times, is almost infinitesimal.
If each instance were, say, one chance in ten-thousand (that's just a rough estimate; it would be much less for Amanda's DNA to be on Filomena's floor); multiplied five times by itself, that gives (10⁴)⁵ = 10²⁰. That's one chance in 10²⁰, or one chance in 100 quintillion.
Odds not good that Amanda's DNA got there by chance, in other words.
Seems to me to be a special pleading to the powers¹⁹ that be.
What I would like to know is the actual evidence that Amanda's DNA was not on the floor already at the time those Luminol prints were established (whenever that was). To get an idea of the odds of this I would think that testing some random areas of the floor that were not shown to be luminol positive would be in order.
http://tlt.its.psu.edu/suggestions/international/bylanguage/mathchart.html
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