A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2806 occupants not wearing seat belts, 37 were killed. Among 7699 occupantswearing seat belts, 20 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. 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 nulland alternative hypotheses for the hypothesis test?OA. Ho: P₁ P2H₁: P₁ P2OD. Ho: 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.)OB. Ho: P₁ = P2H₁: P₁ P₂OE. Ho: P₁ SP₂H₁: P₁ P₂AOC. Ho: P₁ P2H₁: P₁ P2OF. Ho: P₁P2H₁: P₁ P2 The P-value israte is higher for those not wearing seat belts.b. Test the claim by constructing an appropriate confidence interval.the significance level of a = 0.01, soThe appropriate confidence interval is < (P₁-P₂) <.(Round to three decimal places as needed.)What is the conclusion based on the confidence interval?Because the confidence interval limitsthe null hypothesis. There0, it appears that the two fatality rates arevalues, it appears that the fatality rate isfor those not wearing seat belts.sufficient evidence to support the claim that the fatalityBecause the confidence interval limits include

Answered: ОВ. НЕ H₁: F

Math

Statistics

ОВ. НЕ H₁: F

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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Suppose that in a random selection of 100 colored candies, 23% of them are blue. The candy company claims that the percentage of blue candies is equal to 26%. Use a 0.05 significance level to test that claim.
A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 294 people over the age of 55, 63 dream in black and white, and among 300 people under the age of 25, 19 dream in black and white. Use a 0.05 significance level to test the claim that the proportion of people over 55 who dream in black and white is greater than the proportion for those under 25. Complete parts (a) through (c) below. a. Test the claim using a hypothesis test. Consider the first sample to be the sample of people over the age of 55 and the second sample to be the sample of people under the age of 25. What are the null and alternative hypotheses for the hypothesis test? A. Ho: P₁ = P2 H₁: P₁ P2 D. Ho: P₁ P2 H₁: P₁ P2 OB. Ho: P1 P2 H₁: P₁ P2 O E. Ho: P1 H₁: P₁ P2 P2 O C. Ho: P₁ P2 H₁: P₁ = P2 OF. Ho: P₁ P2 H₁: P₁ P2
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A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 323 people over the age of 55, 71 dream in black and white, and among 288 people under the age of 25, 14 dream in black and white. Use a 0.05 significance level to test the claim that the proportion of people over 55 who dream in black and white is greater than the proportion for those under 25. Complete parts (a) through (c) below. Question content area bottom Part 1 a. Test the claim using a hypothesis test. Consider the first sample to be the sample of people over the age of 55 and the second sample to be the sample of people under the age of 25. 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 Your answer is correct. F. H0: p1=p2 H1:…
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