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OpenStudy (lilpac):
If a normal distribution has a mean of 132 and a standard deviation of 20, what is the value that has a z-score of 2.4? A. 168 B. 180 C. 204 D. 144
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OpenStudy (lilpac):
i dont have that norm thing
OpenStudy (giantrobot):
(Value you want-mean)/standard deviation = z score. Test every value. The answer is 180 but use the formula, it's useful.
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