[FoRK] Coin flips not random
ejw at cs.ucsc.edu
Tue Nov 3 01:26:32 PST 2009
Heads or tails? It depends on how you flip it
By Jon Wilner and Mark Emmons
But first, here's what the researchers concluded: Using a high-speed
camera that photographed people flipping coins, the three researchers
determined that a coin is more likely to land facing the same side on
which it started. If tails is facing up when the coin is perched on your
thumb, it is more likely to land tails up.
How much more likely? At least 51 percent of the time, the researchers
claim, and possibly as much as 55 percent to 60 percent — depending on
the flipping motion of the individual.
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