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Score points from exams of two courses were approximately normal distributed with the following means and standard deviations:

III. Z-scores Score points from exams of two courses were approximately normal distributed with the following means and standard deviations Calc 1 : μ 75 points. σ-5 points Physics II: μ-70 points , σ 12 points [15%) Mary received 85 points in calc 1. John received 85 points in the physics 1 exam. Which performance is more impressive, Marys or Johns? In other words, who of the two students achieved a more outstanding result relative to the rest of the class? Compute the z-scores (i.e. standard score) for Marys and Johns exam results, and explain your findings.

math   Statistics-And-Probability   
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Answer #1

TOPIC: Comparison of two scores using z-scores.

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