Let X denote the data transfer time $($ms$)$ in a grid com$-$ puting system $($the time required for data transfer between a $$worker$$ computer and a $$master$$ computer. Suppose that X has a gamma distribution with mean value $37\mathrm{.}5$ ms and standard deviation $21\mathrm{.}6($suggested by the article $$Computation Time of Grid Computing with Data Transfer Times that Follow a Gamma Distribution,$$ Proceedings of the First International Conference on Semantics, Knowledge, and Grid, $2005).$