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9. A simple random sample of front-seat occupants involved in car crashes was obtained. Among 7,000...


9. A simple random sample of front-seat occupants involved in car crashes was obtained. Among 7,000 occupants not wearing seat belts, 18
were killed. Among 7765 occupants wearing seat belts, 16 were killed. Use a 0.05 significance level to test the claim that seat belts are effective
in reducing fatalities using the critical value approach.









Math   Statistics-And-Probability   
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