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  • If P (A) = 6 / 11 , P (B) = 5 /11 and P (A ∪ B) = 7 / 11 , find (iii) P (B|A)

Q. 5.     If  P(A)=\frac{6}{11},P(B)=\frac{5}{11}   and  P(A\cup B)=\frac{7}{11},   find

             (iii)  P(B\mid A)

Answers (1)

best_answer

Given in the question-

P(A)=\frac{6}{11},P(B)=\frac{5}{11}      and    p(A\cap B)=\frac{4}{11}

Use formula

P ( B | A ) = \frac{p(A\cap B)}{P(A)}

P ( B | A ) = \frac{\frac{4}{11}}{\frac{6}{11}}

P ( B | A ) = \frac{4}{6}=\frac{2}{3}

Posted by

seema garhwal

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