(Steps Shown) A Swedish study testing aspirin vs. a placebo reported that 28 of 684 placebo patients and 18 of 676 aspirin patients suffered heart attacks.
Question: A Swedish study testing aspirin vs. a placebo reported that 28 of 684 placebo patients and 18 of 676 aspirin patients suffered heart attacks.
Report the data in a 2x2 contingency table. Test the null hypothesis that having a heart attack is independent of whether one takes an aspirin or placebo.
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