Hello Sir and Madams. I applied for a PhD (doctorate here) in Sciences Department and proposed the subject : "Using scientific methods for Business and projects development"

Now I have an interview next week but I don't have a clear idea. I'm trying to do research around "Decision making methods", and/or "data analysis concepts", "Competitive intelligence" and propose them for business development.
Do you please have an idea about that subject.
Thank you.

You must have had some ideas when you came up with your title.Expand on that.

Thanks I am still researching around that theme any information and suggestions would be welcome thanks.

You can take help of google for this..Also prepare all the types of research methods,their advantages, Field's in which they are previously used,Their success rate using the graph.These points you can prepare .
All the Best!