The connection on the floor seems to have a reusable zip tie on it. I bet you're supposed to attach the hose by slipping the end of your drain hose into the flexible end on the floor, and tightening that zip tie. Not a super secure way to attach them, but some well placed tape would make it more secure after you have it held in place with the zip tie.
Before_I_Wake t1_jee8m99 wrote
Reply to Teflon tape to attach washing machine drain hose to pipe? by AltonBrown11037
The connection on the floor seems to have a reusable zip tie on it. I bet you're supposed to attach the hose by slipping the end of your drain hose into the flexible end on the floor, and tightening that zip tie. Not a super secure way to attach them, but some well placed tape would make it more secure after you have it held in place with the zip tie.