Because the amounts of nicotine in king size cigarettes listed in Data Set 4 in Appendix B constitute a sample of size n = 25, we must satisfy the requirement that the population is normally distributed. How do we verify that a population is normally distributed?

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Data Set 4: Cigarette Tar, Nicotine, and Carbon Monoxide All measurements are in milligrams per cigarette. CO denotes carbon monoxide. The king size ciga- rettes are nonfiltered, nonmenthol, and non-light. The menthol cigarettes are 100 mm long, filtered, and non-light. The cigarettes in the third group are 100 mm long, filtered, nonmenthol, and non- light. Data are from the Federal Trade Commission. Brand Austin Basic Bristol Cardinal Cavalier Chesterfield Cimarron Class A Doral GPC Highway Jacks Marker Monaco Monarch Old Gold Pall Mall Pilot Prime STATDISK: Minitab: Excel: TI-83/84 Plus: Text file names: Sebring Summit Sundance Worth King Size Tar Nicotine CO 20 1.1 16 27 27 20 20 24 20 23 20 22 20 20 20 20 20 10 24 20 21 Pyramid Raleigh Extra 23 25 20 22 20 20 1.7 7 17 13 14 14 10 12 n nun 18 16 11 12 15 13 11 13 11 11 666676SCLOSEOVERLEEHEE 1.1 1.1 1.1 1.1 1.1 1.1 Data set name is Cigaret. Worksheet name is CIGARET.MTW. Workbook name is CIGARET.XLS. App name is CIGARET and the file names are the same as for text files. KGTAR, KGNIC, KGCO, MNTAR, MNNIC, MNCO, FLTAR, FLNIC, FLCO (where KG denotes the king size cigarettes, MN denotes the menthol cigarettes, and FL denotes the filtered cigarettes that are not menthol types). 1.1 1.1 16 16 16 16 17 16 15 16 14 16 16 16 16 16 14 16 16 14 18 15 16 14 16 16 Brand Alpine Austin Basic Belair Best Value Cavalier Doral Focus GPC Highway Jacks Kool Legend Marker Maverick Merit Newport Now Pilot Players Prime Pyramid Salem True Vantage Menthol Tar Nicotine CO 16 1.1 13 0.8 16 9 14 13 12 14 14 0.9 0.8 0.8 0.8 0.8 13 0.9 0.8 13 0.8 16 13 0.8 13 0.8 1.2 18 1.3 2992344 15 1668 1.0 19 1.4 14 0.7 14 13 0.8 0.2 1.0 0.8 0.8 1.2 0.6 0.7 15 17 19 9 17 17 15 17 15 17 17 15 WY5V VB=B3741522679 17 18 11 18 Filtered 100 mm Non-menthol Brand Barclay Basic Camel Highway Jacks Kent Lark Marlboro Maverick Merit Monaco Monarch Mustang Newport Now Old Gold Pall Mall Pilot Players Prime Raleigh Tareyton True Viceroy Winston Tar Nicotine CO 5 0.4 4 16 17 13 13 SHESSAMMASESTIS 14 15 15 15 9 13 13 13 15 2 15 15 13 14 15 16 15 7 17 15 1.0 1.2 0.8 0.8 1.0 1.1 1.1 1.1 0.8 0.8 0.8 0.8 1.0 0.2 1.1 1.0 0.8 1.0 0.9 1.1 1.1 0.6 1.3 1.1 97BB37151512878638158157 15 157614