A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2823 occupants not
Question:
a. Test the claim using a hypothesis test.
b. Test the claim by constructing an appropriate confidence interval.
c. What does the result suggest about the effectiveness of seat belts?
Identify the null hypothesis, alternative hypothesis, test statistic, P-value or critical value(s), conclusion about the null hypothesis, and final conclusion that addresses the original claim.
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a H 0 p 1 p 2 H 1 p 1 p 2 Test statistic z 611 Critical value z 164 5 P valu...View the full answer
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