The following contingency table summarizes the drug test results for 401 test-takers: Positive Negative Total Doesn't use drugs 2 160 162 Uses drugs 229 10 239 Total 231 170 401 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 positive: 0.5960 2) The probability of a false positive: 0.0249 3) The probability of a correct inference:
The following contingency table summarizes the drug test results for 401 test-takers: Positive Negative Total Doesn't use drugs 2 160 162 Uses drugs 229 10 239 Total 231 170 401 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 positive: 0.5960 2) The probability of a false positive: 0.0249 3) The probability of a correct inference:
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 4ECP: Show that the probability of drawing a club at random from a standard deck of 52 playing cards is...
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Transcribed Image Text:The following contingency table summarizes the drug test results for 401 test-takers:
Positive
Negative
Total
Doesn't use drugs
2
160
162
Uses drugs
229
10
239
Total
231
170
401
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 positive:
0.5960
2) The probability of a false positive:
0.0249
3) The probability of a correct inference:
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