A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2769 occupants not wearing seat belts, 28 were killed. Among 7887 occupants wearing seatbelts, 14 were killed. Use a 0.01 significance level to test the claim that seat belts are effective in reducing fatalities. Complete parts (a) through (c) below....P-value =(Round to three decimal places as needed.)What is the conclusion based on the hypothesis test?The P-value isV the significance level of a = 0.01, soV the null hypothesis. ThereV sufficient evidence to support the claim that the fatality rate is higher forthose not wearing seat belts.b. Test the claim by constructing an appropriate confidence interval.The appropriate confidence interval is < (P, - P2) A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2769 occupants not wearing seat belts, 28 were killed. Among 7887 occupants wearing seatbelts, 14 were killed. Use a 0.01 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 alternativehypotheses for the hypothesis test?O A. Ho: P1 #P2H:Pq =P2O B. Ho: P1 SP2H: P1 #P2OC. Ho: P1 = P2H: P1 P2H1: P1 #P2Identify the test statistic.z=(Round to two decimal places as needed.)Identify the P-value.P-value =(Round to three decimal places as needed.)What is the conclusion based on the hypothesis test?V the null hypothesis. ThereV sufficient evidence to support the claim that the fatality rate is higher forThe P-value isV the significance level of a = 0.01, sothose not wearing seat belts.b. Test the claim by constructing an appropriate confidence interval.

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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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The US Department of Energy reported that 45% of homes were heated by natural gas. A random sample of 348 homes in Oregon found that 156 were heated by natural gas. Test the claim that proportion of homes in Oregon that were heated by natural gas is different than what was reported. Use a 1% significance level. Give answer to at least 4 decimal places. What are the correct hypotheses? (Select the correct symbols and use decimal values not percentages.) Ho: P Test Statistic = =✓ ✓ OF H₁: P Based on the hypotheses, compute the following: p-value = 45 0° 45 OB vo
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A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2976 occupants not wearing seat belts, 33 were killed. Among 7813 occupants wearing seat belts, 10 were killed. Use a 0.01 significance level to test the claim that seat belts are effective in reducing fatalities. a. Identify the test statistic. z equals (Round to two decimal places as needed.) b. Identify the P-value. P-value equals (Round to three decimal places as needed.) c. Test the claim by constructing an appropriate confidence interval. The appropriate confidence interval is less than left parenthesis p 1 minus p 2 right parenthesis less than (Round to three decimal places as needed.)
For the last part of the question, the options are: Fail to reject OR reject; Sufficient OR not sufficient; is OR is not; Thanks!
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