What is the conclusion based on the hypothesis test? The P-value is v the significance level of a = 0.01, 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)
What is the conclusion based on the hypothesis test? The P-value is v the significance level of a = 0.01, 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
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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I need help with answering the questions after identifying the P-value.
Transcribed Image Text:What is the conclusion based on the hypothesis test?
V the significance level of a = 0.01, so
V the null hypothesis. There
V sufficient evidence to support the claim that the fatality rate is higher for
The P-value is
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
V0, 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?
O A. The results suggest that the use of seat belts is associated with higher fatality rates than not using seat belts.
O B. The results suggest that the use of seat belts is associated with lower fatality rates than not using seat belts.
O C. The results suggest that the use of seat belts is associated with the same fatality rates as not using seat belts.
O D. The results are inconclusive.
Transcribed Image Text:A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2949 occupants not wearing seat belts, 28 were killed. Among 7899 occupants wearing 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.
...
a. 1est uie cidii using a inypouiesis 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
H:P1> P2
OC. Ho: P1 #P2
H1: P1 = P2
O B. Ho: P1 2 P2
H: P, #P2
OF. Ho: P1 =P2
O D. Ho: P1 = P2
H: P1 # P2
O E. Ho: P1 SP2
H: P1 #P2
H: P1 <P2
Identify the test statistic.
z= 4.40
(Round to two decimal places as needed.)
Identify the P-value.
P-value = 0.000
(Round to three decimal places as needed.)
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