CONFIDENCE(alpha,standard_dev,size) returns the confidence interval for a population mean : CONFIDENCE « Statistical functions « Microsoft Office Excel 2007 Tutorial

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Microsoft Office Excel 2007 Tutorial » Statistical functions » CONFIDENCE   21.9.1.CONFIDENCE(alpha,standard_dev,size) returns the confidence interval for a population mean Input the formula: =CONFIDENCE(0.06,2.1,100). Press Enter to get the result. Referenced from Excel Help 21.9.CONFIDENCE 21.9.1. CONFIDENCE(alpha,standard_dev,size) returns the confidence interval for a population mean