2012Äê3ÔÂ26ÈÕº£¹Ø×ÜÊð·¢²¼µÚ15ºÅ¹«¸æ£¬Ðû²¼Êʵ±µ÷Õû²¿·Ö½ø¿ÚÎïÆ·µÄÍêË°¼Û¸ñºÍË°ÂÊ£¬Ê¹µÃ¡°º£ÌÔ¿Í£¨º£ÍâÌÔ±¦¿Í£©¡±µÄ¾³ÍâÍø¹º×½¸ßÁËÃż÷£®Ä³É̼ÒΪ´ËÕë¶ÔÈËÃÇÔÚ¾³ÍâÍø¹ºµÄ̬¶ÈÔÚij³ÇÊнøÐÐÁËÒ»´Îµ÷²é£¬¹²µ÷²éÁË124ÈË£¬ÆäÖÐÅ®ÐÔ70ÈË£¬ÄÐÐÔ54ÈË£®Å®ÐÔÖÐÓÐ43È˶Ծ³ÍâÍø¹º³ÖÔÞ³É̬¶È£¬ÁíÍâ27È˳ַ´¶Ô̬¶È£»ÄмþÖÐÓÒ21ÈËÔ޳ɾ³ÍâÍø¹º£¬ÁíÍâ33È˳ַ´¶Ô̬¶È£®
£¨1£©¹À¼Æ¸ÃµØÇø¶Ô¾³ÍâÍø¹º³ÖÔÞ³É̬¶ÈµÄÈËÊýËùÕ¼µÄ±ÈÀý£»
£¨2£©Óжà´óµÄ°ÑÎÕÈÏΪ¸ÃµØÇø¶Ô¾³ÍâÍø¹º³ÖÔÞ³É̬¶ÈµÄÈËÊýÓëÐÔÁí¢òÓйأ»
£¨3£©¸ù¾ÝÒÔÉϽáÂÛ£¬ÄÜ·ñÓиüºÃµÄµ÷²é·½Ê½À´¹À¼Æ¸ÃµØÇø¶Ô¾³ÍâÍø¹º³ÖÔÞ³É̬¶ÈµÄÈËÊýËùÕ¼µÄ±ÈÀý£¬²¢ËµÃ÷ÀíÓÉ£®
¸½£º
P£¨k2£¾k£© 0.050 0.010 0.001
k 3.841 6.635 10.828
·ÖÎö£º£¨1£©ÀûÓÃÌõ¼þ¹À¼ÆµØÇø¶Ô¾³ÍâÍø¹º³ÖÔÞ³É̬¶ÈµÄÈËÊýËùÕ¼µÄ±ÈÀý£®
£¨2£©×÷³ö2¡Á2ÁÐÁª±í£¬¼ÆËã³öK2µÄÊýÖµ£¬½áºÏ±í¸ñÖеÄÊýÖµ½øÐжÀÁ¢ÐÔ¼ìÑ飮
£¨3£©¸ù¾Ý¶ÀÁ¢ÐÔ¼ìÑéµÄ½á¹û£¬½øÐзÖÎö£®
½â´ð£º½â£º£¨1£©½ÓÊܵ÷²éµÄ124ÈËÖУ¬ÓÐ64È˶Ծ³ÍâÍø¹º³ÖÔÞ³É̬¶È£¬ËùÒÔ¹À¼Æ¸ÃµØÇø¶Ô¾³ÍâÍø¹º³ÖÔÞ³É̬¶ÈµÄÈËÊýËùÕ¼µÄ±ÈÀýΪ
64
124
=
16
31
£®
£¨2£©2¡Á2ÁÐÁª±íΪ£º
   ÔÞ³É ·´¶Ô   ºÏ¼Æ
 Å®ÐÔ  43  27  70
 ÄÐÐÔ  21  33  54
 ºÏ¼Æ  64  60  124
K2=
124¡Á(43¡Á33-27¡Á21)2
70¡Á54¡Á64¡Á60
¡Ö6.201
£¬ÒòΪ6.201£¾3.841£¬ËùÒÔÓÐ95%µÄ°ÑÎÕÈÏΪ¸ÃµØÇø¶Ô¾³ÍâÍø¹º³ÖÔÞ³É̬¶ÈÓëÐÔ±ðÓйأ®
£¨3£©¸ÃÏîµ÷²éÊÇÔÚij¸ö³ÇÊнøÐеģ¬ÓÐÒ»¶¨µÄ¾ÖÏÞÐÔ£¬ËùÒÔÓ¦¸ÃÊ×ÏÈÈ·¶¨¸ÃµØÇøµÄ³ÇÊÐÈË¿ÚÓëÅ©´åÈ˿ڵıÈÀý£¬ÔÚ´Ë»ù´¡ÉϽøÒ»²½È·¶¨³ÇÊÐÈË¿ÚÓëÅ©´åÈË¿ÚÖеÄÐÔ±ð±ÈÀý£¬Æä´ÎÀûÓ÷ֲã³éÑùµÄ·½·¨³éÈ¡Ñù±¾£¬×îºó½øÐÐͳ¼Æ£¬ÕâÑùµÄµ÷Õû½á¹¹»á¸ü¼Ó¿É¿¿£®
µãÆÀ£º±¾Ì⿼²é¶ÀÁ¢ÐÔ¼ìÑéµÄÓ¦Ó㬿¼²éѧÉúµÄ¼ÆËãÄÜÁ¦£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÊýѧ À´Ô´£º ÌâÐÍ£º

¾©¹ã¸ßÌúÓÚ2012Äê12ÔÂ26ÈÕÈ«Ïß¿ªÍ¨ÔËÓª£¬G808´ÎÁгµÔÚƽֱµÄÌú¹ìÉÏÔÈËÙÐÐÊ»£¬ÓÉÓÚÓöµ½½ô¼±Çé¿ö£¬½ô¼±É²³µÊ±ÁгµÐÐÊ»µÄ·³ÌS£¨t£©£¨µ¥Î»£ºm£©ºÍʱ¼ät£¨µ¥Î»£ºs£©µÄ¹ØϵΪ£ºS(t)=-
3
4
t2+
15
2
t+
165
2
ln(t+1)
£®
£¨1£©Çó´Ó¿ªÊ¼½ô¼±É²³µÖÁÁгµÍêÈ«Í£Ö¹Ëù¾­¹ýµÄʱ¼ä£»
£¨2£©ÇóÁгµÕý³£ÐÐÊ»µÄËٶȣ»
£¨3£©Çó½ô¼±É²³µºóÁгµ¼ÓËٶȾø¶ÔÖµµÄ×î´óÖµ£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÊýѧ À´Ô´£º2012-2013ѧÄêºþÄÏÊ¡»³»¯ÊиßÈýÉÏѧÆÚÆÚÄ©¿¼ÊÔÀí¿ÆÊýѧÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£º½â´ðÌâ

£¨±¾Ð¡ÌâÂú·Ö13·Ö£©)

¾©¹ã¸ßÌúÓÚ2012Äê12ÔÂ26ÈÕÈ«Ïß¿ªÍ¨ÔËÓª£¬´ÎÁгµÔÚƽֱµÄÌú¹ìÉÏÔÈËÙÐÐÊ»£¬ÓÉÓÚÓöµ½½ô¼±Çé¿ö£¬½ô¼±É²³µÊ±ÁгµÐÐÊ»µÄ·³Ì (µ¥Î»£º)ºÍʱ¼ä (µ¥Î»£º)µÄ¹ØϵΪ£º.

£¨1£©Çó´Ó¿ªÊ¼½ô¼±É²³µÖÁÁгµÍêÈ«Í£Ö¹Ëù¾­¹ýµÄʱ¼ä£»

£¨2£©ÇóÁгµÕý³£ÐÐÊ»µÄËٶȣ»

£¨3£©Çó½ô¼±É²³µºóÁгµ¼ÓËٶȾø¶ÔÖµµÄ×î´óÖµ.

 

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÊýѧ À´Ô´£º²»Ïê ÌâÐÍ£º½â´ðÌâ

2012Äê3ÔÂ26ÈÕº£¹Ø×ÜÊð·¢²¼µÚ15ºÅ¹«¸æ£¬Ðû²¼Êʵ±µ÷Õû²¿·Ö½ø¿ÚÎïÆ·µÄÍêË°¼Û¸ñºÍË°ÂÊ£¬Ê¹µÃ¡°º£ÌÔ¿Í£¨º£ÍâÌÔ±¦¿Í£©¡±µÄ¾³ÍâÍø¹º×½¸ßÁËÃż÷£®Ä³É̼ÒΪ´ËÕë¶ÔÈËÃÇÔÚ¾³ÍâÍø¹ºµÄ̬¶ÈÔÚij³ÇÊнøÐÐÁËÒ»´Îµ÷²é£¬¹²µ÷²éÁË124ÈË£¬ÆäÖÐÅ®ÐÔ70ÈË£¬ÄÐÐÔ54ÈË£®Å®ÐÔÖÐÓÐ43È˶Ծ³ÍâÍø¹º³ÖÔÞ³É̬¶È£¬ÁíÍâ27È˳ַ´¶Ô̬¶È£»ÄмþÖÐÓÒ21ÈËÔ޳ɾ³ÍâÍø¹º£¬ÁíÍâ33È˳ַ´¶Ô̬¶È£®
£¨1£©¹À¼Æ¸ÃµØÇø¶Ô¾³ÍâÍø¹º³ÖÔÞ³É̬¶ÈµÄÈËÊýËùÕ¼µÄ±ÈÀý£»
£¨2£©Óжà´óµÄ°ÑÎÕÈÏΪ¸ÃµØÇø¶Ô¾³ÍâÍø¹º³ÖÔÞ³É̬¶ÈµÄÈËÊýÓëÐÔÁí¢òÓйأ»
£¨3£©¸ù¾ÝÒÔÉϽáÂÛ£¬ÄÜ·ñÓиüºÃµÄµ÷²é·½Ê½À´¹À¼Æ¸ÃµØÇø¶Ô¾³ÍâÍø¹º³ÖÔÞ³É̬¶ÈµÄÈËÊýËùÕ¼µÄ±ÈÀý£¬²¢ËµÃ÷ÀíÓÉ£®
¸½£º
P£¨k2£¾k£© 0.050 0.010 0.001
k 3.841 6.635 10.828

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÊýѧ À´Ô´£º2013Äê¸ß¿¼Êýѧ¸´Ï°¾íC£¨Áù£©£¨½âÎö°æ£© ÌâÐÍ£º½â´ðÌâ

2012Äê3ÔÂ26ÈÕº£¹Ø×ÜÊð·¢²¼µÚ15ºÅ¹«¸æ£¬Ðû²¼Êʵ±µ÷Õû²¿·Ö½ø¿ÚÎïÆ·µÄÍêË°¼Û¸ñºÍË°ÂÊ£¬Ê¹µÃ¡°º£ÌÔ¿Í£¨º£ÍâÌÔ±¦¿Í£©¡±µÄ¾³ÍâÍø¹º×½¸ßÁËÃż÷£®Ä³É̼ÒΪ´ËÕë¶ÔÈËÃÇÔÚ¾³ÍâÍø¹ºµÄ̬¶ÈÔÚij³ÇÊнøÐÐÁËÒ»´Îµ÷²é£¬¹²µ÷²éÁË124ÈË£¬ÆäÖÐÅ®ÐÔ70ÈË£¬ÄÐÐÔ54ÈË£®Å®ÐÔÖÐÓÐ43È˶Ծ³ÍâÍø¹º³ÖÔÞ³É̬¶È£¬ÁíÍâ27È˳ַ´¶Ô̬¶È£»ÄмþÖÐÓÒ21ÈËÔ޳ɾ³ÍâÍø¹º£¬ÁíÍâ33È˳ַ´¶Ô̬¶È£®
£¨1£©¹À¼Æ¸ÃµØÇø¶Ô¾³ÍâÍø¹º³ÖÔÞ³É̬¶ÈµÄÈËÊýËùÕ¼µÄ±ÈÀý£»
£¨2£©Óжà´óµÄ°ÑÎÕÈÏΪ¸ÃµØÇø¶Ô¾³ÍâÍø¹º³ÖÔÞ³É̬¶ÈµÄÈËÊýÓëÐÔÁí¢òÓйأ»
£¨3£©¸ù¾ÝÒÔÉϽáÂÛ£¬ÄÜ·ñÓиüºÃµÄµ÷²é·½Ê½À´¹À¼Æ¸ÃµØÇø¶Ô¾³ÍâÍø¹º³ÖÔÞ³É̬¶ÈµÄÈËÊýËùÕ¼µÄ±ÈÀý£¬²¢ËµÃ÷ÀíÓÉ£®
¸½£º
P£¨k2£¾k£©0.0500.0100.001
k3.8416.63510.828

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸