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A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2999 occupants not wearing seat belts, 31 were killed. Among 7626 occupants wearing seat belts, 14 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? OA. Ho: P₁ P2 H₁: P₁ P₂ D. Ho: P₁ #P2 H₁: P₁ = P2 Identify the test statistic. B. Ho: P₁ = P2 H₁: P₁ P2 E. Ho: P₁ = P2 H₁: P₁ P2 Z= (Round to two decimal places as needed.) C. Ho: P₁²P2 H₁: P₁ P₂ F. Ho: P₁ = P2 H₁: P₁ P2

A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2999 occupants not wearing seat belts, 31 were killed. Among 7626 occupants wearing seat belts, 14 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? OA. Ho: P₁ P2 H₁: P₁ P₂ D. Ho: P₁ #P2 H₁: P₁ = P2 Identify the test statistic. B. Ho: P₁ = P2 H₁: P₁ P2 E. Ho: P₁ = P2 H₁: P₁ P2 Z= (Round to two decimal places as needed.) C. Ho: P₁²P2 H₁: P₁ P₂ F. Ho: P₁ = P2 H₁: P₁ P2

MATLAB: An Introduction with Applications
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 2999 occupants not wearing seat belts, 31 were killed. Among 7626 occupants wearing seat belts, 14 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? Choices provided: - **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 (Selected) H₁: p₁ > p₂ **Identify the test statistic.** z = [blank field for numerical input] (Round to two decimal places as needed.)
Transcribed Image Text:A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2999 occupants not wearing seat belts, 31 were killed. Among 7626 occupants wearing seat belts, 14 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? Choices provided: - **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 (Selected) H₁: p₁ > p₂ **Identify the test statistic.** z = [blank field for numerical input] (Round to two decimal places as needed.)
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