Question 146161
Can I assume these problems are taken from "Applied Statistics in 
Business and Economomics"?
If so, tell me what pages the problems are on and I will have a 
look at them.
You must realize that diagosing these problems and typing responses
is a very time consuming process; that is why you are getting no
response to your posting.  If you posted a question or some questions
about certain aspects of the problems you might get someone to look
at the problem.  Posting a specific problem would probably indicate
you had made an attempt yourself to attack the larger question.
Cheers,
Stan H.