IB skill practice

Find percentiles in normal models

Convert standard-normal percentile information back to the original scale.

Paper 1, Paper 2 5 marks Difficulty 5

Find percentiles in normal models - graph-supported reasoning

A normal clinic intake study model has mean \(73\) and standard deviation \(9\). The 80th percentile has \(z=0.84\). Find the percentile value. Enter the requested value and choose the interpretation that matches the result.

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