抄録
In view of the tensile strength of vulcanized rubber being the most important and universal measure in physical tests and also on the strength of acquired data on its distribution, a new method of quality control characterized by it is proposed. The asymptotic distribution of mean of two independent measurements of tensile strength being expressed by Hankel function of order zero and the distribution of difference of such two data becoming logistic, these characteristics have enabled the author to, establish the correct method of quality control for vulcanized rubber that is distinct from the customary three sigma method.