[Sheriff Gonna Getcha]

I would suggest asking for the lower end of the range (e.g. $45K) since you don't have experience, with the qualification that your salary needs depend (to a limited extent) on the fringe benefits and opportunities for salary increases/promotions. It's perfectly reasonable and wise to accept a lower salary now if your future prospects with the company are bright and they have great 401K, medical/dental/optical, disability, and vacation benefits.