Mathematics

27 June, 11:02

Scores on the mathematics part of the SAT exam in a recent year were roughly Normal with mean 455 and standard deviation 120. You choose an SRS of 100 students and average their SAT math scores. If you do this many times, with a sample of size 100 each time, the standard deviation of the average scores will get close to:A. 120 B. 1.2 C. 12 D. None of the above.

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