probability formulas
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7 Terms
1
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addition rule for all events
P(A u B) = P(A) + P(B) - P(A n B)
2
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addition rule for mutually exclusive events
P(A u B) = P(A) + P(B)
3
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conditional probability formula
P(A l B) = P(A n B) / P(B)
4
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multiplication rule for all events
P(A n B) = P(A) x P(B l A)
5
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multiplication rule for independent events
P(A n B) = P(A) x P(B)
6
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P(at least one)
1-p(none)
7
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check for independence
P(A) = P(A l B)
If the two are equal, the events are independent.
Note 
Flashcards (227)