adding .Tex version of hands-out file

[Degoot-AM]

This PR adds .Tex version of hands-out file for better edit suggestions and reveiw.

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[avallecam]

Thanks @Degoot-AM for working on this! This totally fits the aims of the session to assess the concepts learned before working in code.

I added some minor edits to increase the space length as some responses are expected to write more words.

I proposed two major addition:

• Add some paragraphs about rates and how they are calculated from time period. Also, pasted adapted paragraphs to lead learners read how the R0 is related with beta and gamma.

• List of parameters as sentences, and table of parameters to fill. This practical aims to write by hand the numbers before working on code in the next session.

[Degoot-AM]

Thanks @Degoot-AM for working on this! This totally fits the aims of the session to assess the concepts learned before working in code.

I added some minor edits to increase the space length as some responses are expected to write more words.

I proposed two major addition:

* Add some paragraphs about rates and how they are calculated from time period. Also, pasted adapted paragraphs to lead learners read how the R0 is related with beta and gamma.

* List of parameters as sentences, and table of parameters to fill. This practical aims to write by hand the numbers before working on code in the next session.

Thank you @avallecam for your valuable comments