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The Normal Distribution

AP Statistics· difficulty 3/5

A test has mu = 70 and sigma = 8. A student scores 76.

mu = 70 x = 76

What is the z-score?

  • A

    8

  • B

    1.25

  • C

    0.75

    check_circle
  • D

    6

Explanation

z = (76 - 70)/8 = 6/8 = 0.75.

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