This was a very short article that did not seem to me to need a separate encyclopedia entry, so I redirected it to the more comprehensive failure rate article, which addresses the Bathtub curve.
The curve shown is not good: a typical bathtub has a steep decrease in the left side (the side where the bathtub has the drain hole), a longer horizontal low portion and a smooth rise at the other side. Similar is the curve of the failure rate. I suggest to copy here the curve of the german or Esperanto version, which shows the affair better.--Hans W (talk) 21:13, 7 April 2008 (UTC)
Reference 1 has a bad link. The correct link is: http://www.asq.org/qic/display-item/index.html?item=30486 However, I don't know how to edit reflist. Bread2u (talk) 00:08, 2 September 2009 (UTC)