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  • 24-02-2017
  • Mathematics
Answered

Q and R are independent events. P(Q) = 0.4; P(Q AND R) = 0.08. Find P(R).

Verified Answer :

LammettHash
LammettHash LammettHash
  • 24-02-2017

Because Q and R are independent, you have

\(\mathbb P(Q\cap R)=\mathbb P(Q)\times\mathbb P(R)\)
\(0.08=0.4\times\mathbb P(R)\)
\(\implies \mathbb P(R)=0.2\)

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