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The mean score of the maths test is 70 with a standard deviation if 12. Calculate the z-score of a student who got 55 marks. Interpret the result.
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Need plz been trying to do it for a long time and still haven’t succeeded
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20 points + brainliest answer + my mom’s chocolate chip cookie ! subtract.
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The mean score of the maths test is 70 with a standard deviation if 12. Calculate the z-score of a s...
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