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A new blood test for differentiating Parkinson's disease from similar disorders was developed. It was demonstrated that

Posted: Sun Sep 05, 2021 5:22 pm
by answerhappygod
A new blood test for differentiating Parkinson's disease from
similar disorders was developed. It was demonstrated that in the
United Kingdom, sensitivity was 80% and specificity 90%.
Parkinson's disease affects 4 percent of the population at age 85.
Suppose an 85-year-old patient tests positive. What is the
probability that this patient has the disease?