Mathematics, 24.10.2019 23:43, mvazquez298

In the mid-1980’s, the educational testing service compared the sat scores of college bound seniors with those obtained by a large representative sample of high school juniors. on the verbal sat, the 40th percentile of the scores for the college-bound seniors happened to be equal to the 60th percentile of the scores for the sample of juniors. for both groups, the sd was 100 points. the two histograms followed the normal curve closely. find, approximately, the number of points separating the average of the two groups.

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In the mid-1980’s, the educational testing service compared the sat scores of college bound seniors...