Project #82890 - t test

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? Be sure and include your work (Excel files) in your submission. NOTE: When you select this table and paste into Excel, but sure and use the paste special (on the left under the Home tab) and then select Unicode Text. Excel may not recognize the numbers in the table as numbers unless you do this!

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

Subject Business
Due By (Pacific Time) 09/20/2015 01:56 pm
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