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The department of drug control recently raided premises of drug dealers in the city. Out of 12000 drug dealers only 720 have been caught. The mean rupee value of drugs found on these 700 dealers is ₹1,12,50,000 . The standard deviation of the rupee value of drugs is ₹18,45,000. Construct a 90 percent confidence interval for the mean rupee value of drugs possessed by these drug dealers.