Econ 3640_002 Quiz 3_FA16

The nicotine content in cigarettes of a certain brand

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17. The nicotine content in cigarettes of a certain brand is normally distributed, with mean (in milligrams) µ and standard deviation σ = 0.1. The brand advertises that the mean nicotine content of its cigarettes is 1.5, but measurements on a random sample of 100 cigarettes of this brand give a mean of x = 1.53. Is this evidence that the mean nicotine content is actually higher than advertised? To answer this, test the hypotheses H 0 : µ = 1.5, H a : µ > 1.5 at the 5% significance level. You conclude: 0 0
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