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PSYCHO15rus [73]
3 years ago
13

What would P(A|B) be?

Mathematics
1 answer:
Ipatiy [6.2K]3 years ago
4 0
P(A \cap B) = P(A) \cdot P(B)

so

P(A) = \frac{P(A \cap B)}{P(B)} = \frac{2/3}{3/4} = \frac{8}{9}

also, if A or B happens but not both, you add the chances and subtract the chance that both are happening.

P(A|B) = P(A) + P(B) - P(A \cap B) = \frac{8}{9} +\frac{3}{4} - \frac{2}{3} = \frac{35}{36}

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