Not too easy. Not too difficult.
I spent about 10 hours a week studying and working on the project. I would really suggest learning as much about the stats as possible. The certification exam has a lot of that on it!
I learned about the different kinds of waste. I also learned a lot about statistics, such as hypothesis testing, TRIZ, and ANOVA.
Hours per week:
Advice for students:
Just know that it takes effort. The class is fairly easy, but the certification exam was very hard!