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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Definitions:

Logic Error

Mistakes in a program's source code that result in incorrect or unexpected behavior, but do not necessarily cause program termination.

Syntax Error

Mistakes in the syntax of a programming language that make the code invalid or uninterpretable by the compiler.

Interpreted Language

A type of programming language for which most of its implementations execute instructions directly without previous compilation to machine-language instructions.

Java

A high-level, class-based, object-oriented programming language that is designed to have as few implementation dependencies as possible, widely used for building application software.