Question: Use the given contingency table to answer the following questions. All selections are made from the table. Hints: Find row, column, and grand totals. HIV

Use the given contingency table to answer the following questions. All selections are made from the table. Hints: Find row, column, and grand totals.

HIV Status

Yes

No

Test Result

Positive

 47 6

Negative

 2 79

  1. How many false positives are there?
  2. How many false negatives are there?
  3. When selecting a single individual, what is the probability the individual tests negative or does not have HIV?
  4. When selecting two individuals without replacement, what is the probability both test negative?
  5. When selecting three individuals with replacement, what is the probability both test positive?
  6. When selecting a single individual, what is the probability the person is tests negative, given the person is HIV positive?

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