[All Steps] The randomly selected samples of filtered and unfiltered Kings cigarettes have the following data for nicotine content measured in milligrams.
Question: The randomly selected samples of filtered and unfiltered Kings cigarettes have the following data for nicotine content measured in milligrams.
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Filtered Kings cigarettes: n1 = 21, X1 = 0.94, s1 = 0.31
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Unfiltered Kings cigarettes: n2 = 8, X2 = 1.65, s2 = 0.16
Use 0.05 significance level to test the claim that king-size cigarettes with filters have a lower mean amount of nicotine than the mean amount of nicotine in unfiltered king-size cigarettes.
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