I think you'll find the plastic bit at the end is moulded on.
You may be able to cobble something up with a short length pf pipe that fits tightly inside the hose, plus a couple of Jubilee clips. If the hose is corrugated and the corriugations are in a spiral, you may need a goodly dollop of silicon rubber inside the joint as you make it.
Alternatively, it will probably be as well to try and get a new waste hose.
Here's a starter for 10. Check it is suitable for your macjine make and model:
http://www.espares.co.uk/search?SearchTerm=washing%20machine%20hose
XXX, February 2016