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September 2, 2014

September 2, 2014

Posted by **melissa** on Sunday, February 20, 2011 at 4:58am.

a.Â Â What is a 95 percent confidence interval for the mean one-year extended-warranty expenditure per automobile?

b.Â Â At its introduction, the extended warranty was priced at $224 per year per automobile.Â Â Compute a 95 percent confidence interval for the one-year profitability of the extended warranty.

c.Â Â How large a sample would the Warranty Department require if it wanted its 95 percent confidence interval for the mean warranty expenditure to be no more than+_$5

- mangement science the art of modeling w/ spreadshe -
**Writeacher**, Sunday, February 20, 2011 at 7:32amWhat kind of HELP do you need? You need to be specific when asking questions here.

If all you do is post your entire assignment,**with no evidence of thinking on your part**, nothing will happen since no one here will do your work for you. But if you are specific about what you don't understand about the assignment or exactly what help you need, someone might be able to assist you.

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