18% of a Population Is Infected with a Certain Disease

question 25

Multiple Choice

1.8% of a population is infected with a certain disease.There is a test for the disease; however,the test is not completely accurate.94.2% of those who have the disease will test positive.However 4.8% of those who do not have the disease will also test positive (false positives) .What is the probability that a person who tests positive actually has the disease?

• A)0.360
• B)0.265
• C)0.942
• D)0.018
• E)0.735

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