Question 1092414
z for 75 th percentile is +0.675, so we want everything greater than z=0.675
z=(x-mean)/sd
0.675=(x-1498)/316
213.3=x-1498
x=1711.3
everything greater than a score of 1711 for SAT.
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0.675=(x-21.5)/5.4
3.645=x-21.5
x=25.1, everything greater than a score of 25 for ACT.