In a simple random sample of 200 patients undergoing therapy at a drug abuse treatment center, 60

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In a simple random sample of 200 patients undergoing therapy at a drug abuse treatment center, 60 percent belonged to ethnic group I. The remainder belonged to ethnic group II. In ethnic group I, 60 were being treated for alcohol abuse (A), 25 for marijuana abuse (B), and 20 for abuse of heroin, illegal methadone, or some other opioid (C). The remainder had abused barbiturates, cocaine, amphetamines, hallucinogens, or some other nonopioid besides marijuana (D). In ethnic group II the abused drug category and the numbers involved were as follows:

A1282 B1322 C1132 D1the remainder2 Can one conclude from these data that there is a relationship between ethnic group and choice of drug to abuse? Let and find the p value.

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