josephvcarter
04.02.2020 •
Mathematics
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?
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Ответ:
Ответ:
The probability that Emma has heart disease and the test predicts heart disease is:
48%
Step-by-step explanation:Let A denote the event that Emma has a heart disease.
and B denote the event that the test predicts accurate.
Hence, A∩B denote the event that Emma has heart disease and the test predicts heart disease.
From the given equation we have:
P(A)=0.6
and P(B)=80%=0.8
As we know that event A and event B are independent.
Hence, we have:
P(A∩B)=P(A)×P(B)
⇒ P(A∩B)=0.6×0.8
⇒ P(A∩B)=0.48=48%
Hence, the probability is:
48%
Ответ:
The correct answer is He made a mistake in his calculations when substituting the ordered pair into the equation 5x – 2y = 6 and simplifying.
Step-by-step explanation:
I just took the test ;) good luck on yours