Question

The probability that Emma has heart disease is 0.6. She decides to take a test for the disease that is 80% accurate. What is the probability that Emma has heart disease and the test predicts heart disease?

Answer 1

i need an explanation too

Answer 2

Ok here we have 2 independent events, you can find prob that both are true by multiplying the probabilities
\[P(A and B) = P(A)*P(B)\]
\[= P(heart disease) * P(test accurate)\]
\[= 0.6* 0.8\]