AP Stats - Ch. 15
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Last updated 1:41 AM on 12/8/22
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5 Terms
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General Addition Rule
for any two events, A and B, the probability of A or B is
P(A U B) = P(A) + P(B) - P(A n B)
P(A U B) = P(A) + P(B) - P(A n B)
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Conditional Probability
P(B|A) = P(B n A)/ P(A) (the numerator will always be in the denominator)
it is read as " the probability of B given A"
it is read as " the probability of B given A"
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Generic Multiplication Rule
for any two events, A and B, the probability of A and B is
P(A n B) = P(A) x P(B|A)
P(A n B) = P(A) x P(B|A)
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Independence (used formally)
Events A and B are dependent when P(B|A) = P(B)
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Tree Diagram
a display of conditional events that is helpful in thinking through conditioning
Note 
Flashcards (25)