Quantitative Methods 2017

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Test result

Real status

Fail to reject H0

(No disease)

Reject H0

(Disease)

H0 is true

(No disease)

18

2

20

Ha is true

(Disease)

18

162

180

36

164

200

PPV AND NPV DEPEND ON

PREVALENCE

Specificity=90%

Prevalence=90%

Sensitivity=90%

NPV=50% PPV=99%