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Assume that of the student body at your school are seniors and that of the students walk to school. If the events are independent and a student from this school is selected at random, calculate the following probabilities.   

  1. Look at the percentage of the student body that is a senior.
    If the total sum of the student body must be , how much is left for students that are not a senior?


    Make an area model.
    Where on the table is ?


    not a senior


    does not walk


    Where on the table is ?

  4. Identify the sample space in parts (b) and (c) above as a “union” or a “intersection.”