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At Lara’s school, of the student body is male and of the students walk to school. Assume that these two events are independent. If a student from Lara’s school is selected at random, determine the following probabilities.

  1. (student is female)

    If out of is male, then what percentage is female?

  2. (student is male and does not walk to school)

    Independent events:

  3. (student walks to school or does not walk to school)

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

    Refer to the Math Notes box in Lesson 3.1.5 or the definitions of union and intersection in the glossary.