信賴區間

http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0CDAQFjAA&url=http%3A%2F%2Fmathcenter.ck.tp.edu.tw%2FResources%2FCtrl%2FePaper%2FePaperOpenFileX.ashx%3FautoKey%3D11&ei=H4E2T5-LHcOPiAe8p6mbAg&usg=AFQjCNEMwniZoaEsLJhSzp5ZNcsuTJ2ioA&sig2=veS6FbgWHH_dMwJamAllOg


http://www.kut.com.tw/Upload//ProductProbation/File/%E9%AB%98%E4%BA%8C_%E4%B8%8B_CBBAA953g01_030.pdf