Russia has recently started a push for stronger smoking regulations, much like those in Western countries, concerning cigarette advertising, smoking in public places, and so on. The webfile named Russia contains sample data that are consistent with those reported by The Wall Street Journal (The Wall Street Journal, October 16, 2012) on smoking habits of Russians. Analyze the data using Excel or Minitab and answer the following questions.

a. Develop a point estimate and a 95% confidence interval for the proportion of Russians who smoke.

b. Develop a point estimate and a 95% confidence interval for the mean annual per capita consumption (number of cigarettes) of a Russian.

c. For those Russians who do smoke, estimate the number of cigarettes smoked per day.