Add missing "z-test" function from Data Analysis Toolkit.
note that in libreoffice 4.3 Z.TEST() function has been added
( see https://wiki.documentfoundation.org/ReleaseNotes/4.3#Calc
HENCE, Now this RFE to implement z-test can be easily be added in Data Analysis Toolpak. Kindly take it up for libreoffice 4.3 release.
Tomaž Vajngerl committed a patch related to this issue.
It has been pushed to "master":
fdo#74669 Add z-test Statistics Dialog
It will be available in 4.4.0.
The patch should be included in the daily builds available at
http://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More
information about daily builds can be found at:
Affected users are encouraged to test the fix and report feedback.