probability rules/theorem

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5 Terms

1
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addition rule for mutually exclusive events

P(A or B) = P(A) + P(B)

2
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General Addition Rule for 2 Events

P(A or B) = P(A) + P(B) - P(A and B)

3
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Given conditional probability P(B|A)

P (B|A) = P(B∩A)/P(A)

4
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Conditional Probability P(A|B)

P (A | B ) = P(A∩B) / P(B)

5
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General Multiplication Rule

P(A ∩ B) = P(A) x P(B|A)