A set of data items is normally distributed with a mean of 500. Find the data item in this distribution that corresponds to the given z-score.z = 2, if the standard deviation is 10.
A. 520
B. 502
C. 480
D. 510
Answer: A
Mathematics
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A. 
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A. xy - 5 + 
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C. x2y2 - 5 + 12xy
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