When applying for a corporate position on average how long does it take for a recruiter to call you back for an interview

I recently was contacted by a Sprint recruiter after applying for an account associate position within the Sprint Call center. I was moved to the next step which is an appointment at the call center. I received an email confirmation stating that this hiring process will take about 2hours. Does anyone know if they hire on the spot (do i have a chance of getting hired that day)? What are the assessments like (difficult)? I was told to be prepared for some assessments at my appointment? Anyone have any advice on this process?

Thanks alot everyone