(Estimating a Population Proportion)

Question: In a program designed to help patients stop smoking, 198 patients were given sustained care, and 82.8% of them were no longer smoking after one month. Among 199 patients that were given sustained care, 62.8% were no longer smoking after one month (based on data from "Sustained Care Intervention and Post Discharge Smoking Cessation Among Hospitalized Adults by Rigotti, Journal of the American Medical Association)

1.) Construct 95% confidence interval estimates of the percentage of success from sustained care. Interpret the result in the context of this problem.

2.) Construct 95% confidence interval estimates of the percentage of success from standard care. Interpret the result in the context of this problem.

3.) Compare the results. What do you conclude?

*Please Explain 1-2 and 3 i really want to understand this concept.