The very last question about the conclusion doesnt have to

^ The very last question about the conclusion doesn\'t have to be answered.

A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2915 occupants not wearing seat belts, 33 were killed. Among 7824 occupants wearing seat belts, 19 were killed. Use a 0.05 significance level to test the claim that seat belts are effective in reducing fatalities. Complete parts (a) through (c) below a. Test the claim using a hypothesis test. Consider the first sample to be the sample of occupants not wearing seat belts and the second sample to be the sample of occupants wearing seat belts. What are the null and alternative hypotheses for the hypothesis test? H1: p1 #p2 0 E. Ho:p1=p2 H1: P1 P2 H1: p1 = p2 0 F. Ho: p1=p2 Identify the test statistic (Round to two decimal places as needed.)

Solution

a) Option D is right

b) The Z-Score is 5.9034. The p-value is 0. The result is significant at p <0.05. The proportion of Yes or No responses for Observation 1 is 0.011. The proportion for Observation 2 is 0.002.

The p value is 0, We reject null hypothesis.

There is sufficient evidence to claim that fatality is more for those not wearing belts.