Delivered To: r-help at stat.math.ethz.ch Time Stamp: Sat, 04 Aug 2007 01:54:39 -0700 -------------- next part -------------- A non-text attachment was scrubbed... Name: solution.pdf Type: application/pdf Size: 20764 bytes Desc: not available Url : https://stat.ethz.ch/pipermail/r-help/attachments/20070804/67efca1c/attachment.pdf