B Bob B Guest Apr 26, 2009 #1 and a standard deviation of 46.? If a college admissions office requires scores above the 81st percentile, find the cutoff point.
and a standard deviation of 46.? If a college admissions office requires scores above the 81st percentile, find the cutoff point.
J josie_lam New member Apr 26, 2009 #2 I think the 81st percentile = 721.6....Not entirely sure though. of that's the answer you have to subtract 50% (this is the mean of the percentiles) from 81%, that's 31. A probability of 31 = 0.5 in the Z score table 0.5 = X - 694 46 anything above 721.6.... But I'm terrible at stats
I think the 81st percentile = 721.6....Not entirely sure though. of that's the answer you have to subtract 50% (this is the mean of the percentiles) from 81%, that's 31. A probability of 31 = 0.5 in the Z score table 0.5 = X - 694 46 anything above 721.6.... But I'm terrible at stats
