Question

The data represent the results for a test for a certain disease. Assume one individual from the group is randomly selected. Find the probability of getting someone who tests negative, given that he or she had the disease.

The individual actually had disease
Yes. No
Positive. 143. 24
Negative. 7. 126

Answer 1

the probability of getting someone who tests negative, given that he or she had the disease = P(negative and yes) / P(yes) = 7 / (143 + 7) = 7/150