Cancer A study was performed in Basel, Switzerland, on the re- lationship between the concentration of plasma antioxi- dant vitamins and cancer risk [6]. Table 7.4 shows data for plasma vitamin-A concentration for stomach-cancer cases and controls. 1.51 If we assume that the mean plasma vitamin-A con- centration among controls is known without error, then

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A: Thanks for the question :)And your upvote will be really appreciable ;)

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