Use the following information to answer the Questions:
A company gives a new screening test to test its employees for tuberculosis (TB). The results are summarized in the following table. $$\begin{array} { | l | c | c | }
\hline \text { Test result } & \text { Has TB } & \begin{array} { c }
\text { Does not have } \
\text { TB }
\end{array} \
\hline \text { Positive } & 21 & 14 \
\hline \text { Negative } & 4 & 140 \
\hline
\end{array}$$
-If a randomly selected employee has a positive test result, what is the probability that the employee has TB?
A) 21/35
B) 35/179
C) 25/179
D) 4/144

Question

Use the following information to answer the Questions:
A company gives a new screening test to test its employees for tuberculosis (TB). The results are summarized in the following table. $$\begin{array} { | l | c | c | } 
\hline \text { Test result } & \text { Has TB } & \begin{array} { c } 
\text { Does not have } \
\text { TB }
\end{array} \
\hline \text { Positive } & 21 & 14 \
\hline \text { Negative } & 4 & 140 \
\hline
\end{array}$$
-If a randomly selected employee has a positive test result, what is the probability that the employee has TB?
A) 21/35
B) 35/179
C) 25/179
D) 4/144

Quizplus · Accepted Answer

The probability that an employee has TB given a positive test result is calculated using the formula for conditional probability. From the table, 21 employees tested positive and actually have TB, and 14 tested positive but do not have TB. So, the probability is 21 / (21 + 14) = 21 / 35.

Use the Following Information to Answer the Questions: a Company

Use the Following Information to Answer the Questions:
a Company