本研究主要探討如何在兩家供應商中，選擇具有較高製程能力的供應商，其產品製程具有線性剖面資料特性，並且是以單邊製程規格為製程能力標準。我們提出基於比率檢定統計量的方法，在兩種情況下利用假設檢定，比較兩間供應商的製程能力，計算出檢定所需的臨界值，作為供應商選擇決策的依據，並且提供滿足指定的檢定力和信心水準下所需的最小樣本數，這些資訊能有效地幫助決策者來處理此類型的供應商選擇問題。此外，再藉由鋁電解電容製程案例說明如何實際運用我們提供的方法。

In this paper, we consider the supplier selection problem for linear profiles processes with one-sided specifications. An exact approach based on the ratio test statistic to tackle the supplier selection problem is proposed. Testing hypotheses with two cases for comparing two processes are considered. Critical values of the tests are calculated to determine the selection decisions. The number of profiles required for a designated selection power and confidence level is also provided. The results provide useful information to practitioners. A real application on AEC manufacturing processes is presented to illustrate the application of our proposed method.

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