Stat help. K2=95% confidence

1. Jan 19, 2013

rowdy3

To capture the actual Rent amount 95% of the time, predictions from the fitted equation should include a margin of error of about plus or minus ______ (round to the nearest ten dollars).
$128$114 (answer)
$57$228
Here's a pic of the table. How did they get the answer? http://picturetrail.com/sfx/album/view/24285022
I know k2= 95%. I know you do 2 * (standard error) but I don't see that on the table.

2. Jan 20, 2013

Bacle2

Is this an inference for regression test that you're doing?

3. Jan 20, 2013

rowdy3

Yes I think so.

4. Jan 21, 2013

Bacle2

5. Jan 24, 2013

Bacle2

Please let me know if you need more help.