A simple random sample of front seat occupants involved in car crashes is obtained. Among 3281 occupants not wearing seat belts, 40 were killed. Among 9285 occupants wearing seat belts, 125 were killed. Does the data provide evidence to conclude that seat belts are effective in avoiding fatalities? Perform a hypothesis test at the 1% significarnce level. a) Define the parameters and state null and alternative hypothesis b) Find Test Statistics c) Find the p-value d) Conclusion
A simple random sample of front seat occupants involved in car crashes is obtained. Among 3281 occupants not wearing seat belts, 40 were killed. Among 9285 occupants wearing seat belts, 125 were killed. Does the data provide evidence to conclude that seat belts are effective in avoiding fatalities? Perform a hypothesis test at the 1% significarnce level. a) Define the parameters and state null and alternative hypothesis b) Find Test Statistics c) Find the p-value d) Conclusion
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
Related questions
Question
A simple random sample of front seat
occupants involved in car crashes is obtained.
Among 3281 occupants not wearing seat belts,
40 were killed. Among 9285 occupants
wearing seat belts, 125 were killed. Does the
data provide evidence to conclude that seat
belts are effective in avoiding fatalities?
Perform a hypothesis test at the 1%
significarnce level.
a) Define the parameters and state null and
alternative hypothesis
b) Find Test Statistics
c) Find the p-value
d) Conclusion
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