Having problem while Calculating mean body weight of two groups over 5 weeks and plotting in R studio

Hello, welcome to the forum.

What have you tried so far?
what is your specific problem?
we are more inclined towards helping you with specific coding problems rather than doing your work for you.

The forum formatted table is not convenient for forum users to load into their R environments, therefore it will be good to learn about more convenient methods to share. That said could you please turn this into a self-contained REPRoducible EXample (reprex)? A reprex makes it much easier for others to understand your issue and figure out how to help.

If you've never heard of a reprex before, you might want to start by reading this FAQ: