Examples of UX Research Proposals

I'm applying for a junior-level ux research role, and I was given a brief on how the company is trying to understand the causes for user drop off on a particular page of the site. I'm being asked to construct a proposal that illustrates how I would think about the causes for drop off; how I would tackle the issue via research; and what methodologies I would draw upon and apply.

Fairly simple, but I was wondering if anyone had some concrete examples of how a ux research proposal "should" look like; ideally, what its components are; how it's typically structured, etc.

I know this is fairly general, so if anything, I can clarify.