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Find the Indicated Probability If One of the Results Is Randomly Selected, What Is

Question 96

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Find the indicated probability.
-Refer to the table which summarizes the results of testing for a certain disease.  Positive Test Result  Negative Test Result  Subject has the disease 1114 Subject does not have the disease 11172\begin{array} { l | c c } & \text { Positive Test Result } & \text { Negative Test Result } \\\hline \text { Subject has the disease } & 111 & 4 \\\text { Subject does not have the disease } & 11 & 172\end{array} If one of the results is randomly selected, what is the probability that it is a false negative (test indicates the person does not have the disease when in fact they do) ? What does this probability suggest about the accuracy
Of the test?


A) 0.0134; The probability of this error is low so the test is fairly accurate.
B) 0.591; The probability of this error is high so the test is not very accurate.
C) 0.0369; The probability of this error is low so the test is fairly accurate.
D) 0.0348; The probability of this error is low so the test is fairly accurate.

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