Back-up plan if I don't past the DSST in statistics

[soliloquy]

Would Business Statistics through Saylor/ NCCRS work?
BUS204: Business Statistics « Saylor Academy

Maybe if I launder the credits through COSC. Does anyone know if COSC considers this as transfer credit?

Do you think if I study and understand all the videos here: https://www.khanacademy.org/math/probability that I will be able to pass the DSST in Statistics? I did purchase the Idiot's Guide as suggested but today I spent 3 hours trying to understand one concept and when I finally gave up and looked it up on Khan he made perfect sense of it for me (via video) in 8 minutes. It was amazing. I am definitely an aural/visual learner. I just want to make sure Khan covers all that I need to know for the exam.