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A study of yearly income post-graduation consisting of a sample of 1000 graduate is conducted by a University. A yearly income (in thousands) of 34

A study of yearly income post-graduation consisting of a sample of 1000 graduate is conducted by a University. A yearly income (in thousands) of 34 corresponds with a Z score of 0.4. and a yearly income of 29.5 corresponds with a Z score of -0.5. What is the mean in standard deviation of the sample distribution?

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