If we use suitable methods of statistics, we conclude that the average (mean) nicotine amount of the 100 mm filtered non-?light? menthol cigarettes is less than the average (mean) nicotine amount of the king-size nonfiltered, nonmenthol, non-?light? cigarettes. Can we conclude that the first type of cigarette is safe? Why or why not?

The x-values are nicotine amounts (in mg) in different 100 mm filtered, non-?light? menthol cigarettes; the y-values are nicotine amounts (in mg) in different king-size nonfiltered, nonmenthol, and non-?light? cigarettes.

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Nicotine Amounts from Menthol and King-Size Cigarettes 0.8 1.0 0.9 0.8 1.1 1.7 1.7 1.1 1.1 1.1