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5. A study from a university medical center examined whether the risk of hepatitis C as related to whether people had tattoos and to where

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5. A study from a university medical center examined whether the risk of hepatitis C as related to whether people had tattoos and to where they got their tattoos. Do the data indicate that the risk of hepatitis C is unrelated to tattoo status at the 5% significance level? Hepatitis C No Hepatitis C Tattoo, parlor 17 35 Tattoo, elsewhere 12 53 None 22 491 6. A study of people who refused to answer survey questions provided the randomly selected sample data shown in the table below. At a = .01, test the claim the cooperation of the subject response or refusal is independent of age category. Age 18-21 22-29 30-39 40-49 50-59 60 and over Responded 73 255 245 136 138 202 Refused 20 33 16 27 49

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