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38. FILE Debt_Payments. A recent study found that consumers are making average monthly debt payments of $983 (Experian.com, November 11, 2010). The accompanying table shows

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38. FILE Debt_Payments. A recent study found that consumers are making average monthly debt payments of $983 (Experian.com, November 11, 2010). The accompanying table shows a portion of average debt payments for 26 metropolitan areas. Use Excel to construct 90% and 95% confidence intervals for the population mean. Comment on the width of the interval. City Debt Payments Washington, D.C. $1,285 Seattle 1,135 . . . . . . Pittsburgh 763 SOURCE: www.Experian.com, November 11, 2010.

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