boy girl paradox

Published on Mar 8, 2016

TED-Ed presented a riddle last week based on a classic probability problem. However in the riddle there is a small and seemingly insignificant detail that changes the calculation. In this video I present the pertinent details of the frog riddle, explain its connection to the boy or girl paradox, and then do a detailed calculation of what I believe is the correct probability.

TED-ED frog riddle:…

Blog post (another calculation if the probability a male frog croaks is p):

Ron Niles made a video that shows the probability visually and explains an interpretation of a male frog croaking with probability p:…


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