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A. union claims that less than 12% of current U.S. workforce are union members. a random sample of 160 workers included 12 union members. Test

A. union claims that less than 12% of current U.S. workforce are union members. a random sample of 160 workers included 12 union members. Test the claim at a= .05

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9. Test the claim: Ho: H= 75mg Hi: u

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