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Answer to Question #67667 in Statistics and Probability for kk

Question #67667
An environmental agency worries that many cars may be violating clean air emissions standards. The agency hopes to check a sample of vehicles in order to estimate that percentage with a margin of error of 5​% and 90​% confidence. To gauge the size of the​ problem, the agency first picks 80 cars and finds 16 with faulty emissions systems. How many should be sampled for a full​ investigation?
1
Expert's answer
2017-05-05T13:58:09-0400
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