The number of smokers among 120 randomly selected students, Ask an Expert

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suppose that as reported by the centers for disease control about 30% of high school students smoke tobacco. you randomly select 120 high school students to survey them on their attitudes toward scenes of smoking in the movies.

a) The number of smokers among 120 randomly selected students will vary from group to group. Explain why that number can be described wit a normal model.

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