电大_春版最新统计学原理形成性考核册答案(00001)

1、1/172/173/17xxfmx, xxnfmxffx127.5; x2 32.5; x337.5; x442.5; x547.5xxffxf27.5732.5837.5942.51047.5637.5x40f4/17x125; x235; x3f120%f 250% 0.5;f 330% 0.3345;0.2;fffxxf0.235 0.545 0.33625fx1 55, x2 65, x3 75, x 485, x595 f 1150, f 2100, f 370, f 4 30, f 5 50xxf55 15065 100757085309550f150 100 70 30 5068

2、.25m1.22.81.55.5x1.22.81.51.375m4x1.21.41.55/17xf1.221.411.515.3x2 111.325f4x136;19.6x115, x225, x335, x445f 118, f 239 , f 3 31, f 4 12x 2xf1518253935314512f1839311228.721521825 2393523145212907x 乙18393112乙x 2x2907 28.729.1319 .60.26729 .131x13620 .318x228 .7v 1v 26/177/171xyxyrnx21xy21y22nnr 0 r 0

3、0110.30.3o.501o.50.80.80.10ycabxycx30015小时n400xp(1 p)25% * 75& %n4000.78%8/17( xx) 2 ffxffxf(x x)2fxf15030150.30( x x)2f76xf100f0.872100x0.872x t x 3 0.0872 0.26n0.0872100xx X xx0.26150.30X 150.30 0.26150.04X150 .56n 100; n170; t3pn170100% 70%; pn100P(1 P)0.7(1 0.7)4.58%n100ptp3 4.5813.74ppPpp13

4、 .74 % 70 % P 70 % 13 . 74 %56 .26 %P83 .74 %ff9/17(xx) 2 ffxfxf308024440(x x) f10.52x77f40f4010.52x1.67n40xt x2 1.67 3.34xf( x x) 2 ffxxXxx773.34X773.3473.66X80.3x21x3.341.6722n2t222210.54216021.672x2n200;n1195;pn1195100%97 .5%;pp(1p)97.5(1 97.5)1.1%n200n200pt p21.104%2.2%ppPpp97 .5%2.2%P 97 .5% 2.

5、2%95 .3%P99 .7%10/172x2y2y 2xxyx2y 2xynxyxy6148121 4260.9091nx2(x) 2ny2(y) 2679212 6302684262xy1xyn14811 / 621426b1.8128212791 / 6212x)x(nayb xyx426/ 6(1.8128)21/677.3637nbnycabx77.36371.8128xx6yc77.36371.8128x77.36371.8128 666.4869yc77.36371.8128 xxyx 2xyxy1xy16918 1 / 9 546260bn212343621/ 954620.9

6、246xx)(naybxybx0.9246546/ 927.2035n260/ 9nycabx27.20350.9246xyc27.20350.9246x27.20350.9246 14000 12917.1965y c27.20350.9246x11/17x 8800; y 6000; x267.08; y 60; b 0.84500; xbx0.867.08y 600.89ayb x60000.888001040ycabx10400.8xyc10400.8xq1 p1q1 p0q1 p0q0 p0q1 p0q0 p0A、 q1 p1 B、 q0 p1 C、 q1 p0 D、 q0 p0A、

7、 q1 p1 B、 q0 p1 C、 q1 p0 D、 q0 p012/1711a 2 a1a 2a32 annn 1a1a2f 1a2a3f 2an 1anf n 1aan222fcnba0nxna n nRaaa 0ncb13/17K qq1 p0 K pp1q1q0 p0p0 q1p0 q0 p1q1kq0 p0q1q0 p0q1 p0p1q1p1q1p1 q1q0K pK qq0 p0q0 p0p1q11p0 q1q0 p0kp1q1p1p0aana1a2f1a2a 3f 2an 1anf n1222af1 a1a2an 11 ana2n12aka1a2ana0a0a0a0aka1a2

8、anak 1a0a1an1aka0 a1a0 a2a0 ana0akak 1 a1a0 a2a1 anan 1a1a2a3ananana 0a na0a1a2an 1a0a n1 a 0an1(a1a 0 )(a2a1 )(anan 1 )ana014/17128 .2 %124.3 %113 .45 %106116 .39 %113 %.8 %112 . 9%27.3%413 .6%K pp 1q 1812004.55000720004610096 .04 %p 0 q 1101200450008200048000p 1q1p 0 q146100480001900 (万元 )K qp0 q1

9、101200450008200048000114.29%p0 q0101000450008150042000q1 p0q0 p0 48000420006000(万元 )q1 p1q1 p1q1 p 0 109.76%96.04% 114.29%q0 p 0q1 p 0q0 p 0q1 p1q0 p0p1q1p0 q1p0 q1p0 q04100万元1900万元6000万元K pp1q165020012002050p1q16502001200105.74%1938.69kp1.020.951.115/17p1 q1p1q1111.31(万元 )k pK Rp1 q165020012002050p0 q05002001000120.58%1700p1q1p0 q0350(万元 )K q120.58%114.03%105.74%a180 160200a3180nb1b2bn600