Answer Happy

The Federal Trade Commission annually rates varieties of domestic cigarettes according to their tar, nicotine, and carbon monoxide content. Past studies have shown that increases in the tar and nicotine content of a cigarette are accompanied by an increase in the carbon monoxide emitted from the cigarette smoke. Is there any evidence in the data to suggest that this tendency is statistically significant? (adapted from Mendenhall, W., and Sincich, T. (1992), Statistics for Engineering and the Sciences (3rd ed.), New York: Dellen Publishing Co.) Brand: The descriptive name of the cigarette. Tar: The tar content (mg). Nicotine: The nicotine content (mg). Weight: Weight of the cigarettes (g). co: Carbon monoxide emitted (mg).
Brand Tar Nicotine Weight CO Carlton 5.4 0.76 1.1784 11.9 Merit 20.5 1.2 1.028 17.6 Chesterfield 13.2 0.8 0.8771 10.7 PallMall Light 12.1 0.88 0.9137 24.4 MultiFilter 21.3 1.59 1.1097 23.3 Bull Durham 19.6 1.38 0.9222 33.7 Tareyton 21.2 1.27 1.0136 10.5 VirginiaSlims 7.1 0.54 0.9469 7.4 L&M 5.9 0.44 0.9099 2.6 WinstonLights 6.2 0.75 0.8891 203.3 TRUE 11 1.03 0.9574 4.9 Kent 18.1 1.36 1.0886 400.4 NewportLights 8.5 0.61 1.0247 20.8 Marlboro 2 0.1 0.8983 15.5 Kool 15.3 1.03 0.9858 32.4 LarkLights 13.3 0.75 0.9893 18.8 CamelLights 1.8 0.73 0.9264 1.7 GoldenLights 2 0.26 1.0578 1.1 Benson&Hedges 12.2 0.77 0.9394 17.7 Viceroy RichLight 6.2 0.56 0.9135 10 SalemUltra 31.5 2.28 1.1673 20.1 Now 8.5 0.76 0.9289 8.8 OldGold 11.3 0.88 0.9511 10 Raleigh 6.7 0.47 0.948 2.9 Alpine 7 0.67 0.9144 5.9
Data set 1 Introduction Explain the background of the data, repeat the "story" of the data in your own words, comment on the manner in which the data was collected (if possible), and discuss the properties of each of the variables included in the design. Problem statement Indicate the primary purpose of the research and indicate which are the relevant questions that need answering. These questions should be the motivation for every analysis conducted. NOTE: Do not conduct pointless analyses that do not in some way facilitate answering these questions. Approach Briefly describe the approach you will follow to answer the questions. Explain what graphical/numerical techniques will be used to explore the data, define the model(s) used to analyse the data, and state all necessary hypotheses required to answer the research problem.