A test subject is randomly selected for a pregnancy test. What is the probability of getting a subject who is not pregnant, given that the test result is positive? Find the probability using the data table. Positive Test Negative TestSubject is pregnant. 78 7Subject is not pregnant. 12 28A. 0.10B. 0.13C. 0.19D. 0.25
Accepted Solution
A:
You're given that the test result is positive, so only look at the first column not pregnant = 12 total = 78+12 = 90 probability = 12/90 = 0.13333333.