Part D round to 3 decimal places A simple random sample of front seat occupants involved in car crashes is obtained. Among 2780 occupantsnot wearing seat belts, 37 were killed. Among7731 occupants wearing seat belts, 15 were killed. Use a 0.05 significance level to test the claim that seatbelts are effective in reducing fatalities.(a) Test the claim using a hypothesis test.Ho: P1 P2H1:Choose one of the following letter_A: Pi = P2:B: P1 > P2:C: p1 < P2D: P1 + P2(b) Identify the test statistic.7.33z test =(Round to two decimal places.)%3D(c) Identify the P-value. Conclusionp-value is 0.000(Round to three decimal places.)since p-value is [ less than, or greater than) s.f.0.05 so Reject( Reject / Fail toreject. )(d) Test the claim by constructing an appropriate confidence interval.< Pi – P2 <(Round to three decimal places.)

We have given that Sample size n1 = 2780 , n2= 7731 Favorable cases x1= 37 , x2= 15

Answered: A simple random sample of front seat…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2741 occupants not wearing seat belts, 29 were killed. Among 7694 occupants wearing seat belts, 11 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? A. H0: p1=p2 H1: p1>p2 B. H0: p1=p2 H1: p1≠p2 C. H0: p1≥p2 H1: p1≠p2 D. H0: p1≤p2 H1: p1≠p2 E. H0: p1≠p2 H1: p1=p2 F. H0: p1=p2 H1: p1<p2 Identify the test statistic. z=enter your response here (Round to two decimal places as needed.) Identify the P-value. P-value=enter…
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