Rules Graphs should be neat clean and welllabeled Explanatio

Rules:

Graphs should be neat, clean and well-labeled.

“Explanations” and answers should given be given in the form of complete sentences. Since I give partial credit on the projects you should show your work so that some partial credit can be assigned if your answer is incorrect.

Suppose that, as reported by the Center of 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.

1:Out of the 120 students selected, how many would you expect to be smokers?

2:What would you expect the standard deviation of the number of smokers to be out of the 120 randomly selected?

3:The number of smokers among 120 randomly selected students will vary from group to group. Explain why the number can be described with a Normal model.

4:Using the 65-95-97.7 Rule, create and interpret a model for the number of smokers among your group of 120 students.

Solution