Refer to the Table Which Summarizes the Results of Testing

question 86

Multiple Choice

Refer to the table which summarizes the results of testing for a certain disease.
$$\begin{array} { l | c c } & \text { Positive Test Result } & \text { Negative Test Result } \\\hline \text { Subject has the disease } & 87 & 6 \\\text { Subject does not have the disease } & 27 & 158\end{array}$$
If one of the results is randomly selected, what is the probability that it is a false positive (test indicates the person has the disease when in fact they don't) ? What does this probability suggest about the accuracy of the test?

• A) 0.410; The probability of this error is high so the test is not very accurate.
• B) 0.146; The probability of this error is high so the test is not very accurate.
• C) 0.0216; The probability of this error is low so the test is fairly accurate.
• D) 0.0971; The probability of this error is high so the test is not very accurate.

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