Data Analysis & Decision making

Please do not waste my time by contacting me if this is not your area of knowledge. You must be knowledgeble in statistics.

There are 3 questions. If you can solve 3 & 4 that will be fine.  Questions are in the attached word document. Also attached is the excel grid to use for the solution. I hope you have the right stat tools (spss) to get this done.  

I can only accept your first submission as final, so please accurate in your solution.  The earlier, the better. Thanks