Question: Need help on parts a through c in attachment. I do not understand. A simple random sample of front-seat occupants involved in car crashes is

Need help on parts a through c in attachment. I do not understand.

A simple random sample of front-seat occupants involved in car crashes is obtained. Amond 2873 occupants not wearing seat belts. 37 were killed. Among 7644 occupants wearing seat belts. 11 were killed. Use a 0.01 significance level to test the claim that seat belts are effective in reducting fatalities.

understand. A simple random sample of front-seat occupants involved in car crashes

b. Test the claim by constructing an appropriate confidence interval. The appropriate confidence interval is P2 Hy: P1 = P2 H1: P1

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