A simplé random sample of front-seat occupants involved in car crashes is obtained. Among 2902 occupants not wearing seat belts, 28 were killed. Among 7873 occupants wearing seat belts, 16 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. are uie nul and aitemnauve nypoieses ioi une nypouiesis test? O A. Ho P1SP2 H1: P, # P2 O B. H, P1 P2 H1: P1 = P2 O C. H, P1 P2 H P1 P2 O D. Ho P12 P2 H1: P1 #P2 O E. H, P1 P2 OF. Ho P1 P2 H1: P1
A simplé random sample of front-seat occupants involved in car crashes is obtained. Among 2902 occupants not wearing seat belts, 28 were killed. Among 7873 occupants wearing seat belts, 16 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. are uie nul and aitemnauve nypoieses ioi une nypouiesis test? O A. Ho P1SP2 H1: P, # P2 O B. H, P1 P2 H1: P1 = P2 O C. H, P1 P2 H P1 P2 O D. Ho P12 P2 H1: P1 #P2 O E. H, P1 P2 OF. Ho P1 P2 H1: P1
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.7: Probability
Problem 5E: List the sample space of each experiment. Rolling one die and tossing one coin
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Transcribed Image Text:A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2902 occupants not wearing seat belts, 28 were killed. Among 7873
occupants wearing seat belts, 16 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.
are uie nul and aitemnauve nypouieses ioi une nypouiesis test?
O A. Ho P1SP2
H1: P, # P2
O B. H, P1 P2
H1: P1 = P2
O C. H, P1 P2
H P1 P2
O D. Ho P1 P2
H1: Pq # P2
O E. H, P1 P2
H1: Pr #P2
OF. Ho P1 P2
H1: P1 <P2
Identify the test statistic.
(Round to two decimal places as needed.)
Identify the P-value.
P-value =|
Transcribed Image Text:A Simple random sample of front-seat occupants involved in car crashes is obtained. Among 2902 occupants not wearing seat belts, 28 were killed. Among 7873
occupants wearing seat belts, 16 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.
The P-value is
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) <U
(Round to three decimal places as needed.)
What is the conclusion based on the confidence interval?
Because the confidence interval limits
V 0, it appears that the two fatality rates are
V Because the confidence interval limits include
values, it appears that the fatality rate is
V for those not wearing seat belts.
se
c. What do the results suggest about the effectiveness of seat belts?
se
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