00533nam a2200121Ia 450000500170000000800460001703700290006304000210009204100130011308400250012624502080015126000520035920250508154944.0008  250505s9999    xx            000 0 eng d  aBooks to be hide in OPAC  aFEDL bengcFEDL  aeng2eng  a001.422, COL/OqFEDL 0aSequential analysis when the quality being tested is mearsured and when the question in whether a lot differs from a standard: Mean of normal distribution, known standard deviation, two-sided alternative  aNew York, USAb Columbia University Pressc1945