5 32 A tobacco company advertises that the average nicotine content of its cigarettes is...
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5 32 A tobacco company advertises that the average nicotine content of its cigarettes is at most 14 milligrams A consumer protection agency wants to determine whether the average nicotine content is in fact greater than 14 A random sample of 300 cigarettes of the company s brand yields an average nicotine content of 14 6 milligrams and a standard deviation of 3 8 milligrams Deter mine the level of significance of the statistical test of the agency s claim that is greater than 14 If a 01 is there significant evidence that the agency s claim has been supported by the data
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