Hi Molly,Sorry for the delayed response. Unfortunately we don't have any prior examples because this is the first time that we are running the course.
I have posted a bunch of example projects from a different course we run Biostat 209 that might give a slight idea of what to aim for (these projects received A+ grades) . However, bear in mind that Biostat 209 is a considerably more advanced course than Biostat 202. Also note that the project is worth around 4 homeworks, so that may allow you to gauge how much effort is required.
Cheers,John