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A test with 99% sensitivity and 95% specificity is applied to three populations. Population A has a prevalence of 3%. Population B has a prevalence

A test with 99% sensitivity and 95% specificity is applied to three populations. Population A has a prevalence of 3%. Population B has a prevalence of 11%. Population C has a prevalence of 25%. Each population has exactly 1000 people. NOTE: you cannot not have portions of people so you need to round your numbers up or down. Please complete the following table:

Population

A

B

C

Number in Population

1000

1000

1000

Prevalence

3%

11%

25%

Number Diseased

Number Not Diseased

Number of True Positives

Number of False Positives

Total number positive on the test

Positive Predictive Value

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