References
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2. Cochran, W. G. Sampling Techniques, Third Edition. New York: Wiley, 1977.
3. Gitlow, H. S., and D. M. Levine. Six Sigma for Green Belts and Champions. Upper Saddle River, NJ: Financial Times Prentice Hall, 2005.
4. Levine, D. M., T. C. Krehbiel, and M. L. Berenson. Business Statistics: A First Course, Third Edition. Upper Saddle River, NJ: Prentice Hall, 2003.
5. Levine, D. M., D. Stephan, T. C. Krehbiel, and M. L. Berenson. Statistics for Managers Using Microsoft Excel, Fourth Edition. Upper Saddle River, NJ: Prentice Hall, 2005.
6. Levine, D. M., P. P. Ramsey, and R. K. Smidt, Applied Statistics for Engineers and Scientists Using Microsoft Excel and Minitab. Upper Saddle River, NJ: Prentice Hall, 2001.
7. Microsoft Excel 2002. Redmond, WA: Microsoft Corporation, 2001.
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