6. Compute the test statistic to test your hypotheses. (report to 1 decimal place)

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Extracted text: 6. Compute the test statistic to test your hypotheses. (report to 1 decimal place)


Extracted text: The nicotine content in cigarettes of a certain brand is normally distributed with standard deviation o = 1 milligrams. The brand advertises that the mean nicotine content of their cigarettes is u = 1.5, but measurements on a random sample of 100 cigarettes of this brand gave a mean of 1.53. Is this evidence that the mean nicotine content is actually higher than advertised?