Question: Tar and Cigarettes Refer to the sample data listed below and use a 0.05 significance level to test the claim that the mean amount of

Tar and Cigarettes Refer to the sample data listed below and use a 0.05 significance level to test the claim that the mean amount of tar in filtered king-size cigarettes is less than the mean amount of tar in nonfiltered king-size cigarettes. All measurements are in milligrams, and the data are from the Federal Trade Commission.

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