1. Social Security Numbers Each social security number is a sequence of nine digits. What is the probability of randomly generating nine digits and getting your social security number?
Positive Test Results Negative Test Result
Subject is pregnant 80 5
Subject is not pregnant 3 11
2. Assume that one of the subjects is randomly selected. Find the probability that the selected subject is not pregnant, given that the test was negative. I the result the same as the probability of a negative test result given that the selected subject is not pregnant?