Homework Help is Here – Start Your Trial Now!
Math
Statistics
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? O B. Ho: P1 #P2 H1: P1 = P2 OC. Ho:P1 = P2 H1: P1 P2 O D. Ho: P1 = P2 H1: P1 # P2 O F. Ho: P1 Sp2 H: P, # P2 E. Ho: P1 2 P2 H1: P, # P2 Identify the test statistic. (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? The P-value is V the significance level of a = 0.05, so V the null hypothesis. There V sufficient evidence to support the claim that the fatality rate is higher for those not wearing seat belts. b. Test the claim by constructing an appropriate confidence interval. The appropriate confidence interval is< (P1 - P2)

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? O B. Ho: P1 #P2 H1: P1 = P2 OC. Ho:P1 = P2 H1: P1 P2 O D. Ho: P1 = P2 H1: P1 # P2 O F. Ho: P1 Sp2 H: P, # P2 E. Ho: P1 2 P2 H1: P, # P2 Identify the test statistic. (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? The P-value is V the significance level of a = 0.05, so V the null hypothesis. There V sufficient evidence to support the claim that the fatality rate is higher for those not wearing seat belts. b. Test the claim by constructing an appropriate confidence interval. The appropriate confidence interval is< (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
See similar textbooks
icon
Related questions
Question

the p value is (less then, greater then) the significance of =0.05, so (reject, fail to reject) the null hypothesis. there, (is, is not) sufficient evidence to support the claim that the fatality rate is higher for those not wearing seat belts. 

Because the confidence interval limits, (include, do not include) 0, it appears that the two fatality rates are (equal, not equal) because the confidence interval limits include, (positive and negative, only positive, only negative) values it appears that the fatality rate is (lower, higher, the same) for those not wearing seat belts. 

A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2947 occupants not wearing seat belts, 37 were killed. Among 7756 occupants wearing seat belts, 15 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? O A. Ho: P1 = P2 H1:P1 > P2 B. Ho: P1 + P2 H1: P1 = P2 C. Ho: P1 = P2 H1: P1 <P2 O E. Ho: P1 2 P2 O D. Ho: P1 = P2 H1:P1 #P2 O F. Ho: P1 Sp2 H4: P, # P2 H1: P1 # P2 Identify the test statistic. (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? The P-value is the significance level of a = 0.05, so the null hypothesis. There sufficient evidence to support the claim that the fatality rate is higher for those not wearing seat belts. b. Test the claim by constructing an appropriate confidence interval. The 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 limits 0, it appears that the two fatality rates are Because the confidence interval limits include values, it appears that the fatality rate is for those not wearing seat belts.
Transcribed Image Text:A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2947 occupants not wearing seat belts, 37 were killed. Among 7756 occupants wearing seat belts, 15 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? O A. Ho: P1 = P2 H1:P1 > P2 B. Ho: P1 + P2 H1: P1 = P2 C. Ho: P1 = P2 H1: P1 <P2 O E. Ho: P1 2 P2 O D. Ho: P1 = P2 H1:P1 #P2 O F. Ho: P1 Sp2 H4: P, # P2 H1: P1 # P2 Identify the test statistic. (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? The P-value is the significance level of a = 0.05, so the null hypothesis. There sufficient evidence to support the claim that the fatality rate is higher for those not wearing seat belts. b. Test the claim by constructing an appropriate confidence interval. The 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 limits 0, it appears that the two fatality rates are Because the confidence interval limits include values, it appears that the fatality rate is for those not wearing seat belts.
c. What do the results suggest about the effectiveness of seat belts? A. The results suggest that the use of seat belts is associated with lower fatality rates than not using seat belts. B. The results suggest that the use of seat belts is associated with higher fatality rates than not using seat belts. C. The results suggest that the use of seat belts is associated with the same fatality rates as not using seat belts. D. The results are inconclusive.
Transcribed Image Text:c. What do the results suggest about the effectiveness of seat belts? A. The results suggest that the use of seat belts is associated with lower fatality rates than not using seat belts. B. The results suggest that the use of seat belts is associated with higher fatality rates than not using seat belts. C. The results suggest that the use of seat belts is associated with the same fatality rates as not using seat belts. D. The results are inconclusive.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman
SEE MORE TEXTBOOKS