Built in functionality missing in 2020b

I had to get a new hard drive for my computer, so I had to reinstall matlab and decided to go with the latest version. mle and ttest2 and I'm sure some other functions keep showing up as "not found" when I try to run some of my old assignements. Is there a way to install these or an alternative that I'm supposed to use instead?

[Andy]

Both mle and ttest2 are from the Statistics and machine learning toolbox; have you checked that this was installed along with the core Matlab?

[Chelsea Moyer]

Hi Andy. I'm installing them now. I do think that was the problem. I had been struggling all night with installing because my computer was left in a state where no one was the owner to any of the folders or drives and no one but the admin (fortunately me) had access to do more than read the files on the computer.

[Sourabh Kondapaka]

Hi Chelsea Moyer,

Was Andy's suggestion helpful in resolving your issue ?

[Chelsea Moyer]

Yes Sourabh,

My old computer was left in a bad state by the repair man, so it was inhibitting MATLAB from properly installing on my computer. I've been able to properly install those toolboxes now.