Consider the table of HIV tests from before: HIV Positive Not HIV Positive (negative) Positive 57 997 1054 Negative 3 18,943 18,946 Total 60 19,940 20,000 1. The probability of randomly choosing someone who is negative and positive. 2. The probability of randomly choosing someone who is negative and tests positive. 3. The probability of randomly choosing someone who is negative and then choosing someone who is positive. 4. The probability of randomly choosing someone who is negative or choosing someone who is positive. 5. The probability of randomly choosing someone who is positive or tests negative.

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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Consider the table of HIV tests from before:
HIV Positive
Not HIV Positive
(negative)
Positive
57
997
1054
Negative
3
18,943
18,946
Total
60
19,940
20,000
1. The probability of randomly choosing someone who is negative and positive.
2. The probability of randomly choosing someone who is negative and tests positive.
3. The probability of randomly choosing someone who is negative and then choosing someone
who is positive.
4. The probability of randomly choosing someone who is negative or choosing someone who is
positive.
5. The probability of randomly choosing someone who is positive or tests negative.
Transcribed Image Text:Consider the table of HIV tests from before: HIV Positive Not HIV Positive (negative) Positive 57 997 1054 Negative 3 18,943 18,946 Total 60 19,940 20,000 1. The probability of randomly choosing someone who is negative and positive. 2. The probability of randomly choosing someone who is negative and tests positive. 3. The probability of randomly choosing someone who is negative and then choosing someone who is positive. 4. The probability of randomly choosing someone who is negative or choosing someone who is positive. 5. The probability of randomly choosing someone who is positive or tests negative.
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