atarrada atarrada

23-02-2014
Mathematics

Answered

Millions of Americans are subjected to drug testing in the workplace. The tests are not always reliable. A false positive rate of 5% is considered to be a conservative estimate. Suppose that there are 20 employees in your company, which tests its workers weekly.

1) What is the probability of no false-positives for this week’s test?

Verified Answer :

crisforp crisforp

24-02-2014

(100% - 5%)*20 = 19;

p = 19/20 = 0.95 ;

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