P(A')=0,25 P(B/A)=0,5 OBLICZ P(AUdo góry nogamiB)
P( A' ) = 0,25 ,
więc P( A) = 1 - P( A' ) = 0,75
P ( B / A) = 0,5
P( B / A) = P ( A n B ) / P (A)
czyli
P( A n B) = P(A) *P( B / A) = 0,75 * 0,5 = 0,375
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P( A' ) = 0,25 ,
więc P( A) = 1 - P( A' ) = 0,75
P ( B / A) = 0,5
P( B / A) = P ( A n B ) / P (A)
czyli
P( A n B) = P(A) *P( B / A) = 0,75 * 0,5 = 0,375
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