A study was conducted to see of airbags save lives. The table below lists the results from a simple random sample of front-seat occupants involved in car crashes. Airbag AvailableNo Airbag AvailableOccupant Fatalities4152Total number of occupants11,5419,853 Which test is appropriate for this data? Why?State the null hypothesis and alternative hypothesis to test the claim that the fatality rate of occupancy is lower for those equipped with airbags.What is the sample proportion of fatalities where there were airbags available, 1?What is the sample proportion of fatalities where there were no airbags available, p2?What is the difference in the two proportions, D?What is the standard error of the difference, SED?What is the confidence interval of the difference at a confidence level of 90%?What is the test statistic?At a significance level of 5%, should we reject or fail to reject the null hypothesis?What conclusion can you make?

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Description: A study was conducted to see of airbags save lives. The table below lists the results from a simple random sample of front-seat occupants involved in car crashes. Airbag AvailableNo Airbag AvailableOccupant Fatalities4152Total number of occupants11,

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ISBN:9781305652231

Author:R. David Gustafson, Jeff Hughes

Publisher:R. David Gustafson, Jeff Hughes

Chapter8: Sequences, Series, And Probability

Section8.7: Probability

Problem 58E: What is meant by the sample space of an experiment?

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A study was conducted to see of airbags save lives. The table below lists the results from a simple random sample of front-seat occupants involved in car crashes.

	Airbag Available	No Airbag Available
Occupant Fatalities	41	52
Total number of occupants	11,541	9,853

Which test is appropriate for this data? Why?
State the null hypothesis and alternative hypothesis to test the claim that the fatality rate of occupancy is lower for those equipped with airbags.
What is the sample proportion of fatalities where there were airbags available, ₁?
What is the sample proportion of fatalities where there were no airbags available, p₂?
What is the difference in the two proportions, D?
What is the standard error of the difference, SE_D?
What is the confidence interval of the difference at a confidence level of 90%?
What is the test statistic?
At a significance level of 5%, should we reject or fail to reject the null hypothesis?
What conclusion can you make?

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