Yes, that is normal. On the V5, you can get 1-3 babies, and it's all random. You can't do anything to get the number of babies you want.
If you're wondering why you have a Smart Family with one egg, it's because it's not a Mame Family. The Smart Family is like a step-down from the Mame Family, and it can still get 1-3 eggs (like a Blended Family), unlike a Pure Family, which gives you two eggs.