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The grades on a history midterm at Almond are roughly symmetric with y = 85 and o = 2.0.
Michael scored 86 on the exam.
Find the z-score for Michael's exam grade. Round to two decimal places.

Respuesta :

Answer:

The z-score for Michael's exam grade is 0.50

Step-by-step explanation:

Data

  • mean, μ = 85
  • standard deviation, σ = 2.0
  • Michael's exam grade is the value of interest, x = 86

From definition, z-score is  computed as follows:

Z = (x - μ)/σ

Z = (86 - 85)/2.0

Z = 0.50

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