| Tag | Value |
|---|---|
| file | Probability_uva-general-rules-646-en_uva-general-rules-646-en |
| name | uva-general-rules-646-en |
| section | Probability/Elementary Probability/General Rules |
| type | num |
| solution | 0.7988 |
| tolerance | 0 |
| Type | Calculation |
| Language | English |
| Level | Statistical Literacy |
| IRT-Difficulty | 5.472 |
| p-value | 0.0036 |
When testing a person who does not have the AIDS virus, the probability that the test erroneously indicates that the virus is present is equal to 0.004. If 400 employees of a medical clinic are to be tested be tested and all 400 are free of the AIDS virus, what is the probability that at least one false positive result will occur? We assume that the test results for the different individuals are are independent.Ê Round to four decimal places.
The correct answer is: 0.7988