There's a quiet frustration baked into the Analysis Toolpak problem, and it's one we should name plainly: the tool you need for class is locked behind a policy that has nothing to do with your ability or your MacBook. The user here did everything right, they found the add-in, downloaded it, even located the right menu. And still, Microsoft 365 answered with a firm, impersonal wall. That's not a user error. That's a permissions design that treats a student's own machine as untrusted territory.
What's happening is straightforward. When you sign into Excel with a school account, the software defers to the organization's administrative settings. Even if you're on your personal device, the account takes over and applies the same restrictions as a managed work laptop. The message about "configured to prevent individual acquisition and execution" is the clearest clue: your school's tenant has disabled Office Store add-ins and, in some cases, the Toolpak itself. No amount of local tinkering will override that, because the block lives on the server side, not in your app preferences.
The practical path forward is not to fight the setting. It's to step around it. First, try creating a new workbook and going to Tools, then Add-Ins, and see if Analysis Toolpak appears as a native option rather than a downloaded one. If it's missing entirely, the next move is to check whether your school offers a separate download for Excel outside the Microsoft 365 account portal. Some institutions provide a standalone installer that doesn't carry the same policy restrictions. If that fails, talk to your professor or the IT help desk directly. Explain that you're on your own computer, and ask if there's a way to get a temporary exception or a different version of the tool. You're not asking for special treatment, you're asking for access to something you're already paying for through your school's license.
The deeper issue here is worth noting: when software makes the default answer "no," it shifts the burden onto the learner. That's not how tools should work. A statistics class shouldn't require a workaround just to run a t-test. But until institutions and vendors close that gap, the realistic solution is to use what you have. If the Toolpak stays locked, consider using Excel's built-in functions like T.TEST or Data Analysis alternatives that don't require an add-in. Or pivot to Google Sheets, which handles many of the same statistical tests natively. The goal is to learn the material, not to master the administrative maze. So keep the assignment in focus, and let the IT policy be someone else's problem to explain.