00281nam a2200121Ia 4500082002000000100001900020245004000039260003200079300001000111490002800121500000500149700000500154  a519.5bSp755.TP  aSpiegel, M. R.  aTheory and problems of statisticsb  aNew YorkbMcGraw-Hillc1961  a359p.  aSchaum's outline series  a  a