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Whats the mean of a set of data with the standard deviation of 4, given that a value of 73 has a z-score of 1.5?
Whats the mean of a set of data with the standard deviation of 4, given that a value of 73 has a z-score of 1.5?
a) 61
b) 67.5
c) 67
d) 79
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