Single coil noise is fairly common but not what I would call normal. Good pickups shouldn't be so noisy that you hear them hiss when you are not playing! It may have something to do with the fact you are playing a very entry level bass with cheap electronics! Even upgrading to some inexpensive but better quality pickups like GFS would probably be a big improvement. I have modded several basses with GFS pickups and they have all been very quiet.
Come on noobs. Haven't you been reading TB? Single coil noise (it's virtually never "hiss", which is what active circuits do with treble up max) is normal. Only hum-cancelling pickups will get rid of it.
But Dig. There are TWO types of noise pickup. There is the kind that changes or goes away when you touch ground such as strings or jack body. THAT kind of hum can be fixed with shielding. Then there is the kind that does not go away touching ground but does change with orientation of bass. THAT is single coil hum usually obvious with single coil jazz pickups when singled. When both are on max (or equal volume) they act as a humbucker and cancel that noise.
Playing an "entry level bass" has NOTHING to do with single coil noise. It has to do with having single coil pickups! Duh! The reason people like and use them is because of the clarity of tone they provide. Humbuckers tend to have a broader less defined (people like to call it "mud" but that is an exaggeration) tone. Bottom line if you want that single coil clarity you put up with noise.
However, there are also hum cancelling pickups. For example I put a set of SCN pickups in my Jazz V and they are absolutely great. They never quite make it to single coil clarity, but they don't hum. Nordstrands are great too ($$$). Some hum canceling pickups are not so great. The original Fender "noiseless" pickups in my Jazz V had pretty bad tone, but no hum.
So the noise problem is all one big compromise. Only YOU can decide what sounds good and what you'll put up with and what you'll spend to reduce noise. There is no real answer that does it all here.
Note that there are differences between pickups. GFS pickups were mentioned. They are very hot but still single coil. They still have noise, but the added output tends to cover it up. But over-wound pickups changes the tone and strong magnets will interfere with string vibration. In life there are no free rides.
Note also that single coil noise usually comes from higher current devices like lamp dimmers and amp power supplies. Therefore, moving to a different location can greatly reduce (or increase) your noise level.