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The table below contains the profit margin for the 10 most profitable companies in the chemical and business software industries during one week in February,

The table below contains the profit margin for the 10 most profitable companies in the chemical and business software industries during one week in February, 2010. Is there a difference between these two industries in their average profit margins?

Industry Chemicals Chemicals Chemicals Chemicals Chemicals Chemicals Chemicals Chemicals Chemicals Chemicals Business Software Business Software Business Software Business Software Business Software Business Software Business Software Business Software Company Southridge Enterprise China Agri Business China Sun Group High Tech American Nano Silicon Tech Flamemaster Corp. FutureFuel Corp. Epolin Inc. Air Products & Chemicals Celanese Corp. Synthetech Inc. Ebix Inc. Incredimail LongtopFin'l Tech. Descartes Systems Cogent Inc. Supportsave Solutions Gravity Co. Issuer Direct Business Software Business Software Source: Online Investor.com Profit Margin for one week in February, 2010 Jingwei Int'l TeleCom. Systems Symbol SRGE CHBU CSGH ANNO FAME FTFL EPLN APD CE NZYM EBIX MAIL LFT DSGX COGT SSVE GRVY ISDR JNGW TSYS Profit Margin* 31.37 29.66 22.35 16.02 12.20 11.92 10.90 9.87 9.52 9.13 0.40 39.97 38.80 27.57 26.29 23.71 20.28 19.64 19.39 19.10

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