A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2705 occupants not wearing seat belts, 28 were killed. Among 7724 occupants wearing seat belts, 12 were killed. Use a 0.05 significance level to test the claim that seat belts were effective in reducing fatalities.
A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2705 occupants not wearing seat belts, 28 were killed. Among 7724 occupants wearing seat belts, 12 were killed. Use a 0.05 significance level to test the claim that seat belts were effective in reducing fatalities.
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 3E
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A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2705 occupants not wearing seat belts, 28 were killed. Among 7724 occupants wearing seat belts, 12 were killed. Use a 0.05 significance level to test the claim that seat belts were effective in reducing fatalities.
Transcribed Image Text: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 null and alternative hypotheses for the hypothe
test?
O A. Ho P1 P2
H1 P1<P2
O B. H, P1 P2
H P1=P2
OC. Ho P1 <P2
H: P1 P2
OF. Ho: P1 P2
H1: P1 P2
O E. Ho P1 P2
O D. Ho P1 P2
H1: P1 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.)
Click to select your answer(s).
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