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4-11.

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. Homework Help ✎

  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.