003210000a22001330004500020001500000060000800015082001400023100002200037245003100059250000600090260003300096260000900129650004900138 a0024240400 a100 a519.5 WAL aWalpole, Ronald E aIntroduction to statistics a2 aNew York, Mac Millan Company c1974 aStatistics/ Probability/ Normal distribution