The following contingency table summarizes the drug test results for 409 test-takers: Positive Negative 7 170 Doesn't use drugs Uses drugs Total 2) The probability of a true positive: 221 3) The probability of an error: For a randomly selected test administration, find the following probabilities. (Round the answers to 4 decimal places.) 1) The probability that the test-taker doesn't use drugs: 11 WID Total

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The following contingency table summarizes the drug test results for 409 test-takers:
Positive
Negative
7
170
Doesn't use drugs
Uses drugs
Total
2) The probability of a true positive:
221
3) The probability of an error:
For a randomly selected test administration, find the following probabilities. (Round the answers to 4 decimal
places.)
1) The probability that the test-taker doesn't use drugs:
11
W
Total
Transcribed Image Text:The following contingency table summarizes the drug test results for 409 test-takers: Positive Negative 7 170 Doesn't use drugs Uses drugs Total 2) The probability of a true positive: 221 3) The probability of an error: For a randomly selected test administration, find the following probabilities. (Round the answers to 4 decimal places.) 1) The probability that the test-taker doesn't use drugs: 11 W Total
Expert Solution
Step 1: Given Information

Given data:

The given table summarizes the drug test results for 409 test takers.


Positive NegativeTotal
Don't use drugs7170
Use drugs22111
Total


The objective is to fill the boxes and find the following probabilities. 

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