Free GRE Practice Question

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ID: GRE-MCQ-010
Section: GRE Quantitative Reasoning - Multiple Choice with one answer
Topic: Statistics
Difficulty level: Hard

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A courier service recorded the mass, in kilograms, of each of \(60\) parcels. A box-and-whisker summary of the data has first quartile \(Q_{1}=11\), median \(Q_{2}=12\), and third quartile \(Q_{3}=18\). In addition, a mass of \(23\) kilograms is the \(90^{\text{th}}\) percentile of the data. How many of the parcels have a mass between \(18\) kilograms and \(23\) kilograms, inclusive?

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