Needgmat wrote:In a recent survey, twenty families reported their incomes for 1995. Was the range of reported 1995 incomes for these families greater than $60,000?
1) Thirteen of the reported incomes were between $20,000 and $35,000.
2) Seven of the reported incomes were between $80,000 and $95,000.
Test EXTREMES.
Case 1: 13 incomes of 34,000 and 7 incomes of 81,000
Range = 81,000 - 34,000 = 47,000.
Case 2: 13 incomes of 21,000 and 7 incomes of 94,000
Range = 94,000 - 21,000 = 73,000.
Since in the first case the range is less than 60,000, and in the second case the range is greater than 60,000, the two statements combined are INSUFFICIENT.
The correct answer is
E.
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