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The average score of a statistics class was 71 with a standard deviation of 10. What is the z score of a student with a

  1. The average score of a statistics class was 71 with a standard deviation of 10.
    1. What is the z score of a student with a grade of 68? (2.5 pts)
    2. What is the z score of a student with a grade of 80? (2.5 pts)

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