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Interpreting percentile ranks Government agencies keep data about the income distribution of the population The...

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Interpreting percentile ranks Government agencies keep data about the income distribution of the population The Martin family and Wong family live in a county with 14 000 families The Martin family s income is at the 21st percentile The Wong family s income is at the 13th percentile a Which of the following must be true about the Martin family s and the Wong family s incomes The Martin family earns 8000 more than the Wong family The Wong family earns 8000 more than the Martin family Both the Martin family and the Wong family earn more than the men income Both the Martin family and the Wong family earn less than the median income b Which of the following must be true about the Martin family s income The Martin family earns about 21 of the highest income in their county O The Martin family s income is in the top half of incomes in their county The Martin family earns 21 000 The Martin family earns less than about 79 of families in their county

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