The following contingency table summarizes the drug test results for 425 test-takers: Doesn't use drugs Uses drugs Total Positive 2 249 Negative 161 13 Total For a randomly selected test administration, find the following probabilities. (Round the answers to 4 decimal places.) 1) The probability that the test-taker uses drugs: 2) The probability of a false positive: 3) The probability of a correct inference: 4) The positive predicting value:

MATLAB: An Introduction with Applications
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The following contingency table summarizes the drug test results for 425 test-takers:
Doesn't use drugs
Uses drugs
Total
Positive
2
249
Negative
161
13
Total
For a randomly selected test administration, find the following probabilities. (Round the answers to 4
decimal places.)
1) The probability that the test-taker uses drugs:
2) The probability of a false positive:
3) The probability of a correct inference:
4) The positive predicting value:
Transcribed Image Text:The following contingency table summarizes the drug test results for 425 test-takers: Doesn't use drugs Uses drugs Total Positive 2 249 Negative 161 13 Total For a randomly selected test administration, find the following probabilities. (Round the answers to 4 decimal places.) 1) The probability that the test-taker uses drugs: 2) The probability of a false positive: 3) The probability of a correct inference: 4) The positive predicting value:
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