My research question...or hypothesis?

I am thinking on research about some phonetically aspects of mother tongue that could affect the learning of pronunciation of a second language.
I have noticed that some Mexican people have problems with some phonemes and others languages speakers with others so I want to know how and why and knowing the problem I think teachers and researchers can make solutions...I am thinking about it now...

Module 1 ch. 2

Research in second language needs to be very specific and systematic, you need to have in mind what you want, why and how would you prefer your investigation. We learnt that exist four parameters: Synthetic and analytic approaches, Heuristic and deductive objectives, Control and manipulation of the research context and Data and data collection depending of what you decide to investigate your reach would conduct on one side or another. 
I read the first chapter of this... Because is recent research in second language acquisition...this is imprtant... http://www.c-s-p.org/flyers/978-1-4438-0044-0-sample.pdf
I am going to scan this book and if its useful I will use it:

http://books.google.com.mx/books?hl=es&lr=&id=3KglibyrZ5sC&oi=fnd&pg=PR5&dq=introduction+second+language+acquisition+research&ots=wCXsdlaHyW&sig=zGYGzuKm35JueWFiz0h9xLOm26M#v=onepage&q=introduction%20second%20language%20acquisition%20research&f=false

Module 1

In this module, I learnt a lot about the different kinds of research projects that a researchers can conduct. We can even do research by merely observation and questioning facts about our dairy life's. you can have a hypothesis and then try to find a possible answer to that question by your own. This is a natural procees for human beings.
I liked this link: http://www.edison.edu/library/researchskills/Unit1/1whatIsResearch.php