GRE(sh)W(xu)}Y(ji)
GRE(sh)W(xu)}Y(ji)
GRE(sh)W(xu)}Y(ji)
1.AB¼(d)ABͬr(sh)l(f)ęC(j)ʞ0.3AΪ(d)l(f)ęC(j)ʞ0.5l(f)BęC(j)c0.5ȴС keyAl(f)ĸʞ0.5+0.3=0.8;=0.3=PP=0.8P P=0.3750.5
⣺?yn)AΪ(d)l(f)ęC(j)ʞ0.5ABͬr(sh)l(f)rAl(f)ĸʑ(yng)ԓǣAΪ(d)l(f)ABͬr(sh)l(f)֮ͼP=0.5+0.3=0.8
PP=PP=P/P=0.3/0.8=0.375
2.AF(xin)ĸ0.6 B F(xin) 0.8, A or b or both.F(xin)ĸc 0.92^С
⣺~P=1-0.6=0.4 ~P=1-0.8=0.2 ~ab=0.20.4=0.08 1-0.08=0.92
C.
3.320һŮĸ0.65@ȺŮжĔ(sh)100ȴС
⣺?yn)ֻһԴ}ĸ䌍(sh)ǰٷֱȣ
Ů˔(sh)320=96 100xB
4. 1100 xɂ(g)ͬĔ(sh)߽Ԟ 6 ı(sh)ęC(j)?
⣺100ﹲ6ı(sh)Ă(g)(sh)100/6=164t16(g)
GRE(sh)W(xu)}Y(ji)P(gun)£
(sh)W(xu)Ӌ(j)Y(ji)03-19
Zij~02-01
Y(ji)õĔ(sh)W(xu)ʽʽ04-22
P(gun)K(lin)(sh)W(xu)ČW(xu)ɿY(ji)10-17
СW(xu)(sh)W(xu)̌W(xu)unĿY(ji)09-25
xɢ(sh)W(xu)n̿Y(ji)03-13