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25-03-2018
Mathematics

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A z score for a raw score of 75, in a test with a population mean of 80 and a standard deviation of 5 is:

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somia2105 somia2105

02-04-2018

Raw Score = 75, Mean = 80, Standard deviation = 5
z-score = (Raw Score- Mean)/ Standard deviation
z-score = (75-80)/5
z-score = -5/5
z-score = -1 Answer

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