From the study of the relation between smoking and mortality, male recipients of war pensions were classified according to their smoking habits, that is, either non-smokers or smokers. The sample report to the frequencies falling under each cell frequency are given below: Alive Dead Total Non-smokers Smokers 2 9 11 2 2 5 Total 4 11 15 Does the data above indicate a real difference in the death rate between smokers and non-smokers? Use a = 0.05.

A First Course in Probability (10th Edition)
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Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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From the study of the relation between smoking and mortality, male
recipients of war pensions were classified according to their smoking habits, that
is, either non-smokers or smokers. The sample report to the frequencies falling
under each cell frequency are given below:
Alive Dead | Total
Non-smokers
2
9
11
Smokers
5
Total
4
11
15
Does the data above indicate a real difference in the death rate between smokers
and non-smokers? Use a = 0.05.
Transcribed Image Text:From the study of the relation between smoking and mortality, male recipients of war pensions were classified according to their smoking habits, that is, either non-smokers or smokers. The sample report to the frequencies falling under each cell frequency are given below: Alive Dead | Total Non-smokers 2 9 11 Smokers 5 Total 4 11 15 Does the data above indicate a real difference in the death rate between smokers and non-smokers? Use a = 0.05.
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