Question

ijµçÊǪ́ÓÐA¡¢BÁ½ÖÖÖÇÁ¦´³¹ØÓÎÏ·£¬¼×¡¢ÒÒ¡¢±û¡¢¶¡ËÄÈ˲μӣ¬ÆäÖм×ÒÒÁ½È˸÷×Ô¶ÀÁ¢½øÐÐÓÎÏ·A£¬±û¶¡Á½È˸÷×Ô¶ÀÁ¢½øÐÐÓÎÏ·B.ÒÑÖª¼×¡¢ÒÒÁ½È˸÷×Ô´³¹Ø³É¹¦µÄ¸ÅÂʾùΪ£¬±û¡¢¶¡Á½È˸÷×Ô´³¹Ø³É¹¦µÄ¸ÅÂʾùΪ.
(I )ÇóÓÎÏ·A±»´³¹Ø³É¹¦µÄÈËÊý¶àÓÚÓÎÏ·B±»´³¹Ø³É¹¦µÄÈËÊýµÄ¸ÅÂÊ£»
(II) ¼ÇÓÎÏ·A¡¢B±»´³¹Ø³É¹¦µÄ×ÜÈËÊýΪ£¬ÇóµÄ·Ö²¼ÁкÍÆÚÍû.

Answer 1

£¨1£©£¨2£©E=   

(I )·ÖÇé¿öÁÐÓÎÏ·A±»´³¹Ø³É¹¦µÄÈËÊý¶àÓÚÓÎÏ·B±»´³¹Ø³É¹¦µÄÈËÊý°üº¬µÄʼþ£»(II)È·¶¨µÄÈ¡Öµ£¬·Ö±ðÇó¸ÅÂÊ£¬Ð´³ö·Ö²¼Áв¢ÇóÆÚÍû¡£
½â£º£¨I£©Éè¡°i¸öÈËÓÎÏ·A´³¹Ø³É¹¦¡±ÎªÊ¼þA_i(i=0£¬1£¬2)£¬¡°j¸öÈËÓÎÏ·B´³¹Ø³É¹¦¡±ÎªÊ¼þB_j(j=0£¬1£¬2)£¬
Ôò¡°ÓÎÏ·A±»´³¹Ø³É¹¦µÄÈËÊý¶àÓÚÓÎÏ·B±»´³¹ØµÄÈËÊý¡±ÎªA₁B₀+A₂B₁+A₂B₀£®
¡à P(A₁B₀+A₂B₁+A₂B₀)
=P(A₁B₀)+P(A₂B₁)+P(A₂B₀)
=P(A₁)¡¤P(B₀)+P(A₂)¡¤P(B₁)+P(A₂)¡¤P(B₀)
=
£®¼´ÓÎÏ·A±»´³¹Ø³É¹¦µÄÈËÊý¶àÓÚÓÎÏ·B±»´³¹ØµÄÈËÊýµÄ¸ÅÂÊΪ£®¡­¡­4·Ö
£¨II£©ÓÉÌâÉè¿ÉÖª£º¦Î=0£¬1£¬2£¬3£¬4£®
£¬
£¬
£¬
£¬
£®
¡à µÄ·Ö²¼ÁÐΪ£º

	0	1	2	3	4
P

                 ¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­10·Ö
¡à E=£®