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Nic_Smith comments on Probability updating question - 99.9999% chance of tails, heads on first flip - Less Wrong Discussion

2 Post author: nuckingfutz 16 May 2011 12:58AM

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Comment author: Nic_Smith 16 May 2011 05:31:57PM 2 points [-]

I like the reinterpretation of the problem, but is

P(unfair & heads) = 0.99 * 0.0001 ~= 0.001

a typo? Just running the numbers through SpeedCrunch gives 0.99 * 0.0001 = 0.000099, and 0.000099 ~= 0.0001, which seems intuitively right as 0.99 is "almost" 1.

Comment author: Emile 17 May 2011 07:37:03AM 1 point [-]

Augh! Serves me right for modifying the values while writing the comment and not thoroughly rechecking the calculations, thanks!