When I taught undergraduate research methods and statistics, I found that students struggled most with interpretations rather than calculations. However, if you don't understand the calculations that undergird the outcome and the subsequent interpretations, you'll struggle to make the interpretations (and that's probably why you have heard SPSS is hard for some).
I strongly suggest you talk with the professor, be willing to review the concepts you don't understand and seek out tutoring as necessary, consult with the teaching assistant, and work really hard. The students I have seen NOT pass are the ones who struggle and 'disappear' rather than coming to office hours, doing all of the assigned work, meeting with the TA, etc.
Many of the statements you have made on this thread seem to indicate to me that you aren't really looking to learn. You have stated that you are bad at math/statistics, but then have spent a lot of time arguing about statistics with people who most certainly know more about statistics than you - and who very patiently tried to explain them to you. I am worried that if you take this attitude into the classroom, no, you won't succeed in your course. If you come in understanding that you don't know everything and are open to learning - and ready to work to learn - you can definitely be successful. It is going to take an open mind, time, energy, and work.