Harvard undergraduates completed the National College Health Assessment Questionnaire in 2003. The number of students self-reporting cigarette smoking habits and/or marijuana use habits is given below:

Marijuana use

Cigarette smoking Has used Never used Total

Has smoked 488 196 684

Never smoked 302 1686 1988

Total 790 1882 2672

The 2 test statistic for this table is 770.6. Is this significant evidence of an association between cigarette smoking and marijuana use? Be sure to include the hypotheses, the degrees of freedom, an estimate for the p-value (or the critical value), and your conclusion in the context of the problem.