The mean grade in a Physics examination was 75 and the standard deviation was 5. Determine the standard scores (z-value) corresponding to a grade of 85
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Expert's answer
2021-11-15T18:45:29-0500
"Z=\\dfrac{X-\\mu}{\\sigma}=\\dfrac{85-75}{5}=2"
The standard scores (z-value) corresponding to a grade of 85 is "Z=2."
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