NORMINV(probability,mean,standard_dev) returns the inverse of the normal cumulative distribution : NORMINV « Statistical functions « Microsoft Office Excel 2007 Tutorial

1. Microsoft Office Excel 2007 Tutorial
2. Statistical functions
3. NORMINV

Input the formula: =NORMINV(0.9,40,1.6). Press Enter to get the result.

Referenced from Excel Help

21.52.NORMINV
	21.52.1.	NORMINV(probability,mean,standard_dev) returns the inverse of the normal cumulative distribution