A one-sided percentile cutoff
Exam scores are Normal with mean and standard deviation . A scholarship goes to the top of scorers. What is the minimum score that qualifies? Use . (to the nearest integer)
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- Top 2.5% means the 97.5th percentile, so z = +1.96 (positive - above the mean).
- Un-standardize: x = mu + z * sigma = 500 + 1.96 * 100.
Answer
Reveal answer →Final answer
696
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Asked at: Timed Mental-Math & Sequences, Game-Based Aptitude