A random sample of car crashes is obtained. Among 2792 occupants not wearing seat belts, 33 were killed. Among 7654 occupants wearing seat belts, 18 were killed. Use a 0.01 significance level to test the claim that seat belts are effective in reducing fatalities. Consider the occupants not wearing seat belts to be population 1. State the final conclusion regarding the claim (using confidence interval). Because the confidence interval limits __________ 0, there __________ appear to be a significant difference between the two proportions. There __________ sufficient evidence to support the claim that seat belts are effective in reducing fatalities
Seat Belt Problem
A random sample of car crashes is obtained. Among 2792 occupants not wearing seat belts, 33 were killed. Among 7654 occupants wearing seat belts, 18 were killed. Use a 0.01 significance level to test the claim that seat belts are effective in reducing fatalities. Consider the occupants not wearing seat belts to be population 1.
State the final conclusion regarding the claim (using confidence interval).
Because the confidence interval limits __________ 0, there __________ appear to be a significant difference between the two proportions.
There __________ sufficient evidence to support the claim that seat belts are effective in reducing fatalities.
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