1. A recently published study presents a new test for identifying a biomarker for schizophrenia. Their study included data from 30 patients clinically diagnosed with schizophrenia and 30 unaffected controls. Their diagnostic tool successfully classified 24 of the 30 affected as disease-positive and 15 of the unaffected controls as disease-negative. Using the results from these 60 patients as if they were the whole population at risk, replicate the study's findings for

a. Probability of a positive test

b.Positive predictive value

c.Negative predictive value

Schizophrenia is a condition that is prevalent in about 0.5% of Americans (NIMH website). Recalculate the study's findings (items a-c) for this prevalence and be prepared to discuss the strength of the test as advertised and how it may actually perform in practice.