The two-headed coin
Among 1000 coins, one is two-headed and the rest are fair. You pick one at random and flip 10 heads in a row. What is the probability it is the two-headed coin? (to 3 decimals)
Show hints (2)+
- A fair coin gives 10 heads with probability .
- Apply Bayes' rule.
Answer
Reveal answer →Final answer
0.506 (± 0.005)
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