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:
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:
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter6: Ratio, Proportion, And Probability
Section6.7: Probability And Odds
Problem 2C
Question
![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:](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F218414e4-3b46-4b83-912e-0cd4fb336a27%2F4a4ff9a3-236e-4431-b4ec-b64e288da998%2Fharfrs_processed.jpeg&w=3840&q=75)
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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