Compute the probability having Hepatitis A given that the test for it is positiv

Question

Compute the probability having Hepatitis A given that the test for it is positive under the conditions that the test is properly and administered (prevalence 37%, sensitivity 98%, selectivity 99%) the test's sensitivity alone is compromised (prevalence 37%, sensitivity 90%, selectivity 99%) the test's selectivity alone is compromised (prevalence 37%, sensitivity 98%, selectivity 93%) both sensitivity and selectivity are compromised (prevalence 37%, sensitivity 90%, selectivity 93%) Compute the probability of having Hepatitis C given that the test is positive under the same four sets of conditions the test is properly administered (prevalence 2%, sensitivity 98%, selectivity 99%) the test's sensitivity alone is compromised (prevalence 2%, sensitivity 90%, selectivity 99%) the test's selectivity alone is compromised (prevalence 2%, sensitivity 98%, selectivity 93%) both sensitivity and selectivity are compromised (prevalence 2%, sensitivity 90%, selectivity 93%)

Explanation / Answer

> compute the probability having hepatitis A given that the rest for it is positive under the conditions that

d) both sensitivity and selectivity are compromised

                                              ( prevalence 37%, senstivity 90%, selectivity 93%)

>

b)Thee test sensitivity alone is compromised

                                              ( prevalence 2%, senstivity 90%, selectivity 99%)

d) both sensitivity and selectivity are compromised

                                              ( prevalence 37%, senstivity 90%, selectivity 93%)

d) both sensitivity and selectivity are compromised

                                              ( prevalence 37%, senstivity 90%, selectivity 93%)

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