Ayes to the left

Of the twelve post-war American presidents, including the current president elect, six were left-handed, Barack included.

Given that an estimated 8.5% of the population is left-handed, the probability that six or more of twelve people selected at random will be left-handed is 0.022178%, or 1 in 4,509. (The probability that all twelve are left-handed is 0.000000000014%, or 1 in 7,030,284,356,250. That’s roughly the same odds of selecting a dollar bill at random from the US national debt and getting the right one. The probability of a dozen right-handers is 34%.)

Is left-handedness really random?


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