Carbon Monoxide and Cigarettes Refer to the given data for the measured amounts of carbon monoxide (CO) from samples of filtered and nonfiltered king-size cigarettes. All measurements are in milligrams, and the data are from the Federal Trade Commission. Use a 0.05 significance level to test the claim that the mean amount of carbon monoxide in filtered king-size cigarettes is equal to the mean amount of carbon monoxide for nonfiltered king-size cigarettes. Based on this result, are cigarette filters effective in reducing carbon monoxide?

Filtered: 14 12 14 16 15 2 14 16 11 13 13 12 13 12 13 14 14 14 9 17 12 Nonfiltered: 14 15 17 17 16 16 14 16