抽样与参数估计

1、4 - 2*4 - 3*4 - 4*参数估计参数估计假设检验假设检验统计方法统计方法描述统计描述统计推断统计推断统计4 - 7*4 - 8*4 - 9*4 - 10*4 - 11*4 - 13*4 - 14*4 - 15*5 . 21NxNii25. 1)(122NxNii4 - 16*3,43,33,23,132,42,32,22,124,44,34,24,141,441,33211,21,11第二个观察值第二个观察值第一个第一个观察值观察值4 - 17*3.53.02.52.033.02.52.01.524.03.53.02.542.542.03211.51.01第二个观察值第二个观察值第

2、一个第一个观察值观察值4 - 18*5 . 2x625. 02x4 - 19*X5x50 x5 . 2x4 - 20* xn x 4 - 21*正态分布正态分布非正态分布非正态分布样本均值样本均值正态分布正态分布样本均值样本均值正态分布正态分布样本均值样本均值非正态分布非正态分布4 - 22*)(XEnX22122NnNnX4 - 23*NNNN101或nnPnnP101或4 - 24*4 - 25*)(PEnP)1 (24 - 28*4 - 29*4 - 30*xxzx24 - 31*4 - 32*xxx4 - 35*)1 , 0( Nnxz)(22未知或nszxnzx4 - 36*112.

3、5101.0103.0102.0100.5102.6107.5 95.0108.8115.6100.0123.5102.0101.6102.2116.6 95.4 97.8108.6105.0136.8102.8101.5 98.4 93.34 - 37*28.109,44.10192.336.105251096.136.1052nzx36.105x4 - 38*2335392736443642464331334253455447243428393644403949383448503439454845324 - 39*63.41,37.3713.25.393677.7645.15.392nsz

4、x5 .39x77. 7s4 - 41*) 1(ntnsxtnstx24 - 42*15101520148015001450148015101520148014901530151014601460147014704 - 43*2.1503, 8.14762.1314901677.24131.214902nstx1490 x77.24s4 - 44*4 - 46*)1 , 0()1(Nnpznppzp)-1 (24 - 47*%35.74%,65.55%35. 9%65100%)651%(6596. 1%65)1 (2nppzp4 - 48*%29.40%,51.28250%)4 .341%(4 .3496. 1%4 .34)1 (2nppzp4 - 49*4 - 50*4 - 51*4 - 52*4 - 53*4 - 54*4