Probability
Xam Idea
CBSE
Grade 12
Question:
Probability that A speaks truth is $4/5$. A coin is tossed. A reports that a head appeared. Find the probability that actually there was head.
Step-by-Step Solution
Key Concept: P(Truth | Head reported) = (1/2 * 4/5) / (1/2 * 4/5 + 1/2 * 1/5) = 4/5.
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Correct Answer:
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