Conditional Probabilityhard
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A specialized laboratory performs a test for a rare viral strain. The prevalence is 0.5%. The test has a sensitivity of 99% and a specificity of 98%. If an individual tests positive, what is the probability they actually have the virus? Now, if they take a second, independent test and test positive again, what is the new probability?
A specialized laboratory performs a test for a rare viral strain. The prevalence is 0.5%. The test has a sensitivity of 99% and a specificity of 98%. If an individual tests positive, what is the probability they actually have the virus? Now, if they take a second, independent test and test positive again, what is the new probability?