Level of nicotine in cigarettes

Reference no: EM131011797

Level of nicotine in cigarettes

According to data from the Tobacco Institute Testing Laboratory, Camel Lights King Size cigarettes contain an average of 1.4 milligrams of nicotine. An advocacy group commissions an independent test to see if the mean nicotine content is higher than the industry laboratory claims.

(a) What are H0 and Ha?

(b) Suppose that the test statistic is z = 2.36. Is this result signi?cant at the 5% level?

Reference no: EM131011797

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