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Probability of randomly generating nine digits

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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?

Reference no: EM13955979

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