Does anyone have good examples of using mathematical modeling or probabilistic modeling for a project for work?

Hello,

I work in analytics and I am growing my tool kit.

Outside of engineers working on engineering projects, does anyone have a good story of when simulations / mathematical modeling / probabilistic modeling were used in a project at your company?

The contents to learn seem quite interesting, but I want to make sure I am not going into a nonpractical rabbit hole.

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