M. Kaplan, Harold, A Method of One-Sided Nonparametric Inference for the Mean of a Nonnegative Population, American statistician , 41(2), 1987, pp. 157-158
For a few values drawn independently at random from a nonnegative population, I present what I have found to be an effective nonparametric method of one-sided inference for the population mean.The method is based on a martingale argument and use of the Markov inequality.