Question: The partially filled in contingency table summarizing the data from the study is below. POLYPS NO POLYPS Total ASPIRIN 317 PLACEBO 318 Total 140 495

 

The partially filled in contingency table summarizing the data from the study is below.


POLYPS

NO POLYPS

Total

ASPIRIN



317

PLACEBO



318

Total

140

495

635

If aspirin has no effect on having polyps, how many people would you expect to have no polyps in the placebo group (rounded to the nearest 1)?

(A) 318 (B) 495 (C) 248 (D) 252

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