Answer to Question #68500 in Other Other for debby

Question #68500
1. In a random sample of 280 employees with tumour, a scientist found that 112 had worked at jobs considered as \high exposure" with respect to potential tumour- causing agents. Of the remainder, 94 had worked at \moderate exposure" jobs, and 74 had experienced no known exposure due to their jobs. In an independent random sample of 280 employees who had no history of tumour, 41 worked in \high exposure" jobs, 70 worked in \moderate exposure" jobs, and 169 worked in jobs having no known exposure to potential tumour-causing agents. Can the scientist conclude on the basis of these data that the two populations are not homogeneous with respect to job exposure status to potential tumour-causing agents?
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