GREW}Y
GREW}Y
GREW}Y
1.AB¼ABͬrl(f)ęCʞ0.3AΪl(f)ęCʞ0.5l(f)BęCc0.5ȴС keyAl(f)ĸʞ0.5+0.3=0.8;=0.3=PP=0.8P P=0.3750.5
⣺AΪl(f)ęCʞ0.5ABͬrl(f)rAl(f)ĸʑԓǣAΪl(f)ABͬrl(f)֮ͼP=0.5+0.3=0.8
PP=PP=P/P=0.3/0.8=0.375
2.AFĸ0.6 B F 0.8, A or b or both.Fĸc 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@ȺŮжĔ100ȴС
⣺ֻһˣԴ}ĸ䌍ǰٷֱȣ
Ů˔320=96 100xB
4. 1100 xɂͬĔ߽Ԟ 6 ıęC?
⣺100ﹲ6ıĂ100/6=164t16
GREW}YP£
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