On Tue, 21 Oct 2003, gilgames wrote (quoting Marck): > At a Web server every 30 seconds arrive in average 3 requests. I want > to calculate the probability of waiting for more than 15 minutes so > that 80 requests arrive.
Gilgames then continued: > First of all, you need the standard deviation. As several respondents have pointed out, the relevant distribution is Poisson; in which case, if one has the mean, one has the standard deviation also. And if one has the distribution, one can do better than Chebyshev. [ snip, the rest ] ----------------------------------------------------------------------- Donald F. Burrill [EMAIL PROTECTED] 56 Sebbins Pond Drive, Bedford, NH 03110 (603) 626-0816 . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
