Question: It is believed that the effects of smoking differ depending on race. The following table gives the results of a statistical study for this question.

It is believed that the effects of smoking differ depending on race. The following table gives the results of a statistical study for this question.
It is believed that the effects of smoking differ depending

Do the data indicate that African Americans are more likely to develop lung cancer due to smoking? Use α = 0.05.

Average Number of Number of Lung Number in Whites African Americans Cigarettes per Day 15 15 Cancer Cases 78 70 400 280

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