Fri, 10 Aug 2007 03:22:00 -0700 from sara
:
how do i perform student t test for scientific experiment to compare between
control and tested groups

Get your Shift key and ? key fixed, then click Tools | Data Analysis.
(There's a TTEST function, but it's for a one-population Student's t
and you seem to have vtwo populations.)

If Data Analysis doesn't appear in the menu, then install the
Analysis Toolpak. You may need to install Analysis Toolpak VBA as
well; I'm not certain, but it can't hurt.

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