# Calculate the confidence interval

• Jul 2nd 2011, 03:34 PM
RedonYellow
Calculate the confidence interval
I am trying to calculate the confidence interval for this problem using my T-84

http://i233.photobucket.com/albums/e...isChan7/dm.jpg

I go to Stat>Test>7 and get a value so close to the right answer (22772,30058). However the correct answer is (22769.83, 30059.41). How can I get a more precise answer, which is equal to the one provided? the calculator doesn't include the cents.
• Jul 2nd 2011, 04:18 PM
TKHunny
Re: Calculate the confidence interval
Mostly, in my view, the request for a 95.44% interval is a little silly. Is there REALLY data to justify that?
• Jul 2nd 2011, 04:26 PM
RedonYellow
Re: Calculate the confidence interval
This is the complete question. *pulls hair out*
• Jul 2nd 2011, 06:45 PM
TKHunny
Re: Calculate the confidence interval
Rather than maim yourself, why not figure out the error? The "correct" answer appears to be incorrect. That coresponds to a 95.45% Confidence Interval and is just as silly as that requested in the problem statement.