Can you solve the false positive riddle? – Alex Gendler

Published on May 17, 2018
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Captions provided by CCTubes – Captioning the Internet! Practice more problem-solving at https://brilliant.org/TedEd/
Solution to the bonus riddle mentioned at the end: https://brilliant.org/tededprobabilitypairs/

Mining unobtainium is hard work – the rare mineral appears in only 1% of rocks in the mine. But your friend Tricky Joe has something up his sleeve. The unobtainium detector he’s been perfecting for months is finally ready, and it returns accurate readings 90% of the time. But can it really be trusted? Alex Gendler explains the false positive paradox.

Lesson by Alex Gendler, animation by Artrake Studio.

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