P(A) = 0.8 and P(B A) = 0.5. What is P(A B)?

Conditional Probability & Bayes' Theorem · Question 37 of 125

Question 37

MediumOriginal question

$P(A) = 0.8$ and $P(B \mid A) = 0.5$ . What is $P(A \cap B)$ ?

0.3

Correct answerYour answer

0.4

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0.5

Correct answerYour answer

0.625

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Show the answer and explanation

CorrectNot quiteAnswer B

Correct answer: B

Worth noting

0.625 divides, $\frac{0.5}{0.8}$ ; the theorem multiplies.

Ten questions from Conditional Probability & Bayes' Theorem, at your own pace.

Ten questions from Conditional Probability & Bayes' Theorem, at your own pace.