Carb hose disconnected on new 250

[Rrr]

Hello and thank you in advance.

I don’t know much about carburetors. First bike.

This is a brand new Motomax 250.

The hose going from the front of the carb (where the carb connects to the cylinder) is just laying disconnected. I’m assuming the bike would idle much nicer and stay running with it connected. It’s under vacuum and if you plug it the bike dies.

I have included a couple pictures.

I also notice a small nipple in the back upper right of the pic showing the disconnected hose. Is that where it goes?