Wouter, On Thu, 6 Apr 2006 16:08:50 +0200, Wouter van Ooijen wrote: > > If the number seems too large, perhaps it is. > >(snip) > > These kinds of problems are generally taught in upper level statistics > > classes at universities, > > No kidding? For me this was part of the exam of the school that preceded > university (VWO in my country, corresponds to your highschool?). I > *loved* this subject. Same here! I did it at "A Level" - our pre-university exams (in those days). I liked it because Statistics was the subject where you could think through things to get to the answer, if you had time. I found other types of Maths contained things that you just had to know, and if you didn't, you were lost. Cheers, Howard Winter St.Albans, England -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist