## Stat help. K2=95% confidence

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.
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 Recognitions: Science Advisor Is this an inference for regression test that you're doing?
 Yes I think so.

Recognitions: