Jerzy Neyman

Jerzy Spława-Neyman (April 16, 1894 – August 5, 1981; Polish: [ˈjɛʐɨ ˈspwava ˈnɛjman]) was a Polish mathematician and statistician who first introduced the modern concept of a confidence interval into statistical hypothesis testing and, with Egon Pearson, revised Ronald Fisher's null hypothesis testing. Neyman allocation, an optimal strategy for choosing sample sizes in stratified sampling, is named for him.

Spława-Neyman spent the first part of his professional career at various institutions in Warsaw, Poland, and then at University College London, and the second part at the University of California, Berkeley.