Asked by Eric
The mean score on a test was 280 and the standard deviation was 20. You want to pick the top 15%. What will be the minimum cutoff score to be in the top 15%?
Answers
Answered by
Scott
use a table to find the z-score for the upper 15%
cutoff score = 280 + [(z-score) * 20]
cutoff score = 280 + [(z-score) * 20]
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