Question

Assume that out of a population of 1,000, the probability of having a certain disease is...

Assume that out of a population of 1,000, the probability of having a certain disease is 1%. The screening for the disease has a sensitivity of 80% and a specificity of 80%. Using Bayes' theorem, 206 people will test positive for the disease, and, of this number, actually do not have the disease.

A. 8

B. 198

C. 10

D. 2

Math   Statistics-And-Probability   
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Answer #1

We have to find Flase positive results.

That is one who have tested positive for the disease but actually dont dave it.

Ans is 198 OPTION (B)

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