Refer to the Table Which Summarizes the Results of Testing

question 25

Multiple Choice

Refer to the table which summarizes the results of testing for a certain disease. $$\begin{array} { l | c c } & \begin{array} { l } \text { Positive } \\\text { Test Result }\end{array} & \begin{array} { l } \text { Negative } \\\text { Test Result }\end{array} \\\hline \text { Subject has the disease } & 87 & 9 \\\text { Subject does not have the disease } & 27 & 312\end{array}$$ A test subject is randomly selected and tested for the disease. What is the probability the subject has the disease given that the test result is negative?

• A) 0.094
• B) 0.028
• C) 0.972
• D) 0.221

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