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In 1988, the Steering Committee of the Physicians' Health Study Research Group released the results of a 5-year experiment conducted using 22,068 male physicians
In 1988, the Steering Committee of the Physicians' Health Study Research Group released the results of a 5-year experiment conducted using 22,068 male physicians between the ages of 40 and 84. The physicians had been randomly assigned to two groups. One group took an ordinary aspirin tablet every other day, whereas the other group took a "placebo", a pill designed to look just like an aspirin but with no active ingredients. Neither group knew whether they were taking the active ingredient. The results, shown in the table below, support the conclusion that taking aspirin does indeed help reduce the risk of having a heart attack. Aspirin Placebo Heart Attack 104 189 No Heart Attack 10,933 10,842 We did not know it then, but we now have learned that this table is an example of a contingency table. Note the paragraph states that the table supports "the conclusion that taking aspirin does indeed help reduced the risk of having a heart attack". Verify this claim with chi square analysis. Be sure to explain your steps and reasoning.
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