MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Question
The following contingency table summarizes the drug test
results for 440 test-takers:
Positive
Negative
Total
Doesn't use
1
196
drugs
Uses drugs
237
Total
For a randomly selected test administration, find the
following probabilities. (Round the answers to 4 decimal
places.)
1) The probability that the test result is negative:
2) The probability of a true positive:
3) The probability of a correct inference:
4) The positive predicting value:
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Transcribed Image Text:The following contingency table summarizes the drug test results for 440 test-takers: Positive Negative Total Doesn't use 1 196 drugs Uses drugs 237 Total For a randomly selected test administration, find the following probabilities. (Round the answers to 4 decimal places.) 1) The probability that the test result is negative: 2) The probability of a true positive: 3) The probability of a correct inference: 4) The positive predicting value:
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