31 were killed in 2823 accidents for those not wearing seat belts and 16 were killed in 7765 accidents for those wearing seat belts, use a 0.05 significance level to determind if seat belts are effective in reducing fatalities. a.) Give the test statistic z and your yes or no conclusion. b.) Construct a confidence interval to test the claim.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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ISBN:9780079039897
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Chapter4: Equations Of Linear Functions
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If 31 were killed in 2823 accidents for those not wearing seat belts and 16 were killed in 7765 accidents for those wearing seat belts, use a 0.05 significance level to determind if seat belts are effective in reducing fatalities.

a.) Give the test statistic z and your yes or no conclusion.

b.) Construct a confidence interval to test the claim.

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