I Am a Computer Geek

Can somebody please help me! I'm using libreoffice calc and trying to get a t-test to work to show me the table. I cannot figure out why I do not have the command. I tried updating it, but it didn't work. I have other commands such as ANOVA. I tried googling my problem, but couldn't find anything.My patients are gone and it's driving me nuts! This is how I'm supposed to access it.

t-test
Calculates the t-Test of two data samples.

Choose Data - Statistics - t-test

A t-test is any statistical hypothesis test that follows a Student's t distribution.

https://help.libreoffice.org/Calc/Data_Statistics_in_Calc#t-test