What is z-score for the normal distribution


Z-score for the normal distribution.

Your friend is in a different section of the same subject. She also took a test and the class mean was 70 with a standard deviation of 2.3 points. Both you and your friend scored a 73. Comparatively speaking, who performed better on test, you, with an 86, or your friend and Why?

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Basic Statistics: What is z-score for the normal distribution
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