Its due on Monday and I haven't solved any of it.. its like 15% of the total grade

Can someone please help me solve it..

Here are the questions
http://www.2shared.com/document/SwXjswAK/Case_study_Fall2011_updated.html

The information given : http://www.2shared.com/file/do5Nq0Xd/Company_Profiles.html

Please help.. I should solve it on mega-stat on excel..

Please refer to this announcement


Do not simply retype or paste a question from your book or study material

We won't do your homework questions for you.
You were given the assignment for you to learn.

If you come up with your own answer and post it for us to critique that is within reason.

If you have some SPECIFIC questions that you couldn't find or didn't understand, we may help with that.
But this is your assignment, so show us you have at least attempted to complete it on your own.

Thank you.

I don't want the answers.. I want the way to solve the questions..
Like what rules should I use and what are the steps..