A cigarette manufacturer claims that the tar content of brand

A cigarette manufacturer claims that the tar content of brand B cigarettes is lower than that of brand A. To test this claim, the following determinations of tar content, in milligrams, were recorded. Use the rank-sum test with the claim is valid. 0.05 To testwhether

11 14 13 Brand A | 1 14 12 10 10 7 Brand B

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