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µoªí©ó¡G Dec 13 2006, 16:26 ¡@
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µoªí©ó¡G Dec 14 2006, 16:15 ¡@
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Expectation ¤j·§¥i¥H¬Ý¦¨¥§¡¼Æ, ¨Ò¦p, ¦pªG°ÝÂY¡u°©¤L¤S¡v¤l("¦¡¥J", ·L³n«÷µ¥´¤£¨ì...), ÂI¼ÆªºExpecttation ¬O 1/6 x 1 + 1/6 x 2 + 1/6 x 3 + 1/6 x 4 + 1/6 x 5 + 1/6 x 6 = 3.5, ¦pªG¶R¤j¤p(¤¤¤j/¤p1³1, ¦ý³ò"¦¡"³q±þ), ¨º¶R1¤¸¤jªºµ²ªGexpectation ¬O 37/72 x $-1 + 35/72 x $1 = -$1/36 , §Y¬O§A¨C¶R¤@¤¸¤j¤p, ¥§¡§A´N·|¿é1/36¤¸.
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µoªí©ó¡G Dec 16 2006, 16:30 ¡@
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1. ¦pªG N µ¥©ó5 (§Y¬O§á³J¾÷¦³5´Úª±¨ãÅý§A©â):
a. ©â¤@¦¸«K©â¨ì§A·Qnªº¤@´Úªº¾÷·|¬O¦h¤Ö? 20% b. ©â¡u¤£¦h¤£¤Ö¡v3¦¸¤~©â¨ì§A·Qnªº¤@´Úªº¾÷·|¬O¦h¤Ö? 0.8x0.8x0.2=0.128 c. ©â¡u3¦¸©Î3¦¸¤§¤º¡v¤~©â¨ì§A·Qnªº¤@´Úªº¾÷·|¬O¦h¤Ö? 0.128+0.2+0.16=0.488 d. ©â3¦¸¡uÁ٩⤣¨ì¡v§A·Qnªº¤@´Úªº¾÷·|¬O¦h¤Ö? 1-0.488 ©Î¬O 0.8ªº3¦¸¤è =0.512 e. ¨º»ò¥u©â5¦¸´N¶°»ô1®M5´Úªº¾÷·|¬O¦h¤Ö? 1x0.8x0.6x0.4x0.2=0.0384 f. ©â¤»¦¸³£¬O¦P¤@´Úªº¾÷·|¬O¦h¤Ö? 0.2ªº6¦¸¤è=0.000064 g. ©â¤»¦¸³£¬O¬Y¨â´Úªº¾÷·|¬O¦h¤Ö? 0.4ªº6¦¸¤è=0.004096 h. ©â¡u3¦¸©Î3¦¸¤§¤º¡v¤~©â¨ì§A·Qnªº¡u¨â´Ú¡vªº¾÷·|¬O¦h¤Ö? (¨â´Ú³£¤J¤â) 0.4*0.2+0.4*0.8*0.2+0.6*0.4*0.2=0.192 i. ©â¡u¤£¦h¤£¤Ö3¦¸¡v¤~©â¨ì§A·Qnªº¡u¨â´Ú¡vªº¾÷·|¬O¦h¤Ö? (¨â´Ú³£¤J¤â) 0.4*0.8*0.2+0.6*0.4*0.2=0.112 j. ©â 5 ¦¸¡uÁ٩⤣¨ì¡v§A·Qnªº¡u¨â´Ú¨ä¤¤¤@´Ú¡vªº¾÷·|¬O¦h¤Ö? 0.4*0.8^4 +0.6*0.4*0.8^3 +0.6^2*0.4*0.8^2 +0.6^3*0.4*0.8 +0.6^4*0.4 =0.49984 ¦pªGÃD¥Ø·N²[¥]§t"2´Ú³£¨S©â¨ì"ªº¸Ü = 0.5776 2. ¦pªG N µ¥©ó2: a. ©â¡u¤£¦h¤£¤Öi¦¸¡v´N¶°»ô1®M2´Úªº¾÷·|¬O¦h¤Ö? N=2 => 1/2^(i-1) ¼Æ¾Ç¤£¦n Êj....¤j·§¿ùªº«ÜÄY« ²Îp¾Ç¤Ó¤[¨S¸I³£§Ñ¥ú...«á±ªº¤Ó³Â·Ðºâ.Ãi¤F@@ ¥»½g¤å³¹¤w³Q §b¨Ì ©ó Dec 16 2006, 16:44 ½s¿è¹L -------------------- ![]() 2017:Tanaka Yubiseiharukana ![]() 2034:Tanaka Yubiseiakikana CV:¤U«Î «h¤l Ever17...[KID] |
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µoªí©ó¡G Dec 17 2006, 14:35 ¡@
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