Before the breakup of the Bell System, U.S. telephone companies were permitted by law to ask for security deposits from a small percentage of subscribers. The companies used statistical models to decide which customers were most likely to pay their bills

【書誌情報】

ページ数：10ページ

サイズ：A4

商品番号：HBSP-4508

発行日：2006/6/1

登録日：2007/8/16