Question: A study of seatbelt users and non-users yielded the randomly selected sample data summarized in the given table. Test the claim that the amount of smoking is independent of seat belt use. A plausible theory is that people who smoke more are less concerned about their health and safety and are therefore less inclined to wear seat belts. Is this theory supported by the sample data?

# of cigarettes smoked per day

0 1-14 15-34 35 and over

Wear seatbelts 175 20 42 6

Don’t wear s/b 149 17 41 9

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