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I'm not sure how to do this, I got it wrong. For disease Y, there’s a...

I'm not sure how to do this, I got it wrong.

For disease Y, there’s a new rapid and accurate test in the market. The sensitivity of the test is 90% (probability to correctly detect disease Y with positive test result), and the specificity of the test is 99% (probability to correctly give negative result for disease Y free case). The prevalence of the disease is 1% in the population. Write in as percentage without percentage sign and with three decimal places.

What is Pr[ Y | positive ]? (i.e. probability that a person with positive test result has disease X?)
Math   Statistics-And-Probability   
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TOPIC:Application of the Bayes' theorem.

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