Question

Part C Designing a controililed experiment Athough the study you just examined concluded that e cigarette users do not quit smoking more ofen than non-users, keep in mind that this was only one smal study Many more studies are needed belore a clear understanding of e-cigarettes can emerge in arother study researchers woo īterested n "xpOnng whether oogarettes might hep smouers reduce ter use of regular ogarunes. For ni situly, the researchers designed a controlled experiment-they necruited 300 smokers who were intenested in tryling e-cigaretes, and then divided the volunteers into three groupa Group A (100 paricipants) was the "high-nicotine" group. Partcipants received e-cigaretes containing 7.2 mg nicotine cartridges for the full 12 weeks of the study Group B (100 paticipants) was the "intermediate-moine" group. Pancipants received e igaretes eoriairing 7 2 ㎎·otre cartdges for 6 weeks and then S4 뽑12 mg nicosne cartridges for the folowing 6 weeks. Group C (100 participants) was the 'mo-nicoine" group. Participants received no-nicotine cartridgos for 12 weeks Grosp C To avoid any possible bias, the experiment was set up as a double blind studyneither the researchers noe the panticipants knew who was in which group This graph compares data on the three groups for the first two woeks of the study Use your understanding of the experiment and the graph to complete these sentences 6 Group

Answer 1

SOLUTION

Reset Hel increased 1. Compared to baseline, regular cigarette use decreasedin all three groups after 2 weeks of e- cigarette use. The p-value for this result is less than 0.001, suggesting that the result is ncreased decreased 2. This result suggests that e-cigarettes with nicotine are statisticalyasIgatiigaigtrette use. 3. It also suggests that e-cigarettes without nicotine are hot statistiaalyusignifiaantse 4. At 2 weeks, the median number of cigarettes smoked per day for participants in Group statistically significant not statistically significant effective ineffective was 5; in Group A C was 10. The p- was 6; and in Group value for this result is 0.04 5. This result suggests that participants in Group significantly more cigarettes after 2 weeks than participants in the other groups. (who received no nicotine) smoked