Suppose TurboTax, a developer of tax preparation software, would like to determine if the median state tax refund in 2013 differs among various regions of the country.

A random sample of taxpayer refunds from Maryland, California, Louisiana, and Ohio were recorded and are as follows. These data can also be found in the Excel file TurboTax.xlsx.

Maryland

($)

California

($)

Louisiana

($)

Ohio

($)

1,646 1,042 593 324 403 904 575 62 1,613 640 602 324 1,717 1,279 216 345 348 743 399 366 Perform a hypothesis test using a = 0.05 to determine if there is a difference among the median state tax refunds for taxpayers in these four states.

AppendixLO1