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: P1 = P2:B: P1 > P2:C: P1 < P2D: P1 + P2(b) Identify the test statistic.z test =(Round to two decimal places.)%3D(c) Identify the P-value. Conclusionp-value is(Round to three decimal places.)since p-value is [ less than, or greater than) s.f.0.05 so( Reject / Fail toreject. )(d) Test the claim by constructing an appropriate confidence interval.< Pi – P2 <<(Round to three decimal places.)

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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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did a science fair could sense her field She foped a When she was 9 years of age, a in which she tested professional touch therapists to see if con to select either her right hand or her left hand, and then she asked the therapists to identity the selected hand by placing their hand just under her hand without seeing a and without touching it. Among 243 trials, the touch therapists were correct 103 times. Use a 0.05 significance level to test the claim that touch therapists use a method equivalent to random guesses. Do the results suggest that touch therapists are effective? Identity the test statistic (Round to two decimal places as needed) Identify the P-value (Round to three decimal places as needed) State the conclusion about the null hypothesis, as well as the final conclusion that addresses the original claim. Address whether the results suggest that touch the The results GUID the null hypothesis. There sufficient evidence to that touch therapists are effective the claim that…
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